Modern Periodic Table

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  • Опубліковано 4 січ 2025

КОМЕНТАРІ • 4,8 тис.

  • @ManochaAcademy
    @ManochaAcademy  9 місяців тому +71

    For LIVE Classes, Concept Videos, Quizzes, Mock Tests & Revision Notes please see our Website/App 👇
    👉Our Website: bit.ly/2KBC0l1
    👉Android App: bit.ly/3k48zdK

  • @kingkuysofficial
    @kingkuysofficial 10 місяців тому +855

    Who are watching in "2024"

  • @florakuu
    @florakuu 4 роки тому +3138

    When I heard that oxygen and magnesium were dating I was like, OMg.

  • @seemasain3897
    @seemasain3897 5 місяців тому +20

    Hello friend's I also have a easy trick to learn periodic table...
    GROUP -(1)/Alkaline Metal groups
    (H to Fr): H(H),Lina(Li),Ki(K),Rab(Rb),Se(Cs),Fariyad(Fr)
    Group -(2)/Alkaline Earth Metal groups
    (Be to Ra):Beta(Be),Mange(Mg),Car(Ca),Scooter (Sr),Baap(Ba),Raazi(Ra) & S- Block Is Complete..!!
    Group -(3)
    (B to Tl): Baigan(Be),Aalu(Al),Gajar(Ga),In(In),Thela(Tl)
    Group -(4)
    (C to Pb):kal(C),Se(Si),Gaye(Ge),Sant(Sn),Punjab(Pb)
    Group -(5)
    (N to Bi):Nepal(N),Pakistan(P),Australia(As),Sb(Sb),Beiman(Bi)
    Group -(6)
    (O to Po):Old(O),Style(S),Se(Se),Te(Te),Po(Po)
    Group -(7)/Halogen Metals group
    (F to At):Phir(F),Kl(Cl),Bahar(Br),Aayi(I),Aunty(At)
    Group -(8)/Noble Gases/Inert group/Non-Reactive group and Zeroth(0th)group
    (He to Og):Heena(He),Neha(Ne),Aur(Ar),Kareena(Kr),Zero(Xe),Run par(Rn),Out(Og) & P- Block is Complete.....
    Metalloyed Elements:(B,Si,Ge,As,Sb,Te and At)
    .......................All the best For your Exams.!!!
    And Thank you so much mere comment ko like karne ke liye....❤😊
    Here our D-Block start :-
    (Sc to Ac): Group-3 B Scooter(Sc),Yama(Y),Lana(La),Aisi(Ac)
    (Ti to Rf):Group-4 B Tinku(Ti),Zarda(Zr),Haffe(HF),Rafta-Rafta(Rf)
    (V to Db):Group-5 B Vanha(V),Nabbe(Nb),Takle(Ta)Doob gaye(Db)
    (Cr to Sg):Group-6 B Cronia(Cr),Mongia(Mo),Wasim(W),Sehwal(Sg)
    (Mn to Bh):Group-7 B Mann(Mn),Takke(Tc),Re(Re),Bahar(Bh)
    (Fe to Hs):Group-8 B Fi(Fe),Ro(Ru),Oz(Os),Hass(Hs)
    (Co to Mt): Group-8 B Co(Co),Ri(Rh),Ur(Ir),Mat kr (Mt)
    (Ni to Ds):Group-8 B Nahi(Ni),Padh(Pd),Pata(Pt),Dass(Ds)
    (Cu to Au):Group-1 B Copper(Cu),Chandi(Ag),Sona(Au)kabhi mat khona
    (Zn to Hg):Group-2 B Zinda(Zn),Sade(Cd),Hazaar(Hg)aalu 🤓
    Most Imp Things in D-block-🤞🏻👇🏻
    (1) Power full Megnatism
    (2) Ferromagnetic
    (3) Osmium(Os)&Rhodium(Rh) can show +8 Oxidation state
    (4) Periodic table main sabse jada Covalent Nature (Cu) ka hota hain
    (5) (Cu to Au):- Transition elements & Coiniage metals
    (6) (Zn to Hg):- Non-Transition elements
    (7)(Fe-Hs),(Co-Mt)&(Ni-Ds):- In Teeno Ke Group No. Same hai (Group-8 B)
    I hope Mere comment se aap sab ki help ho sake...:)

  • @navyarana9314
    @navyarana9314 4 роки тому +146

    Sir explains very good
    One like for sir

  • @berniceopoku4229
    @berniceopoku4229 3 роки тому +215

    At first I didn't understand anything about periodic table but after watching this video I can now work it out in school

    • @ManochaAcademy
      @ManochaAcademy  3 роки тому +47

      Glad to hear that.

    • @deepthipagolu6118
      @deepthipagolu6118 3 роки тому +10

      U absolutely correct I also can't understand the modern periodic table but after watch this video i can understand easily

    • @banglashahitoghor764
      @banglashahitoghor764 3 роки тому +4

      Me too

    • @preranagupta733
      @preranagupta733 3 роки тому +2

      You're right

    • @mohamedskallon3039
      @mohamedskallon3039 3 роки тому +2

      Thank you very much for your excellent teaching,may we need more method to understand chemistry.

  • @MrJosephochar
    @MrJosephochar 4 роки тому +35

    This is by far the most interesting, most logical, Best explained and easiest to understand lecture on the periodic table. Any student who has you as their Teacher has no reason to score anything less than an A++++ you are the best

  • @ever2008
    @ever2008 2 роки тому +16

    You are unique from other science teachers who just focuses on marks but not learning . But real thing is learning on which you are putting your continuous efforts .
    Thank you so much

  • @meghaagarwal3058
    @meghaagarwal3058 3 роки тому +9

    I was having very difficulty in learning this topic earlier, but now I am more than clear as you also told other things like colours, name of groups,etc. Thank you so much sir for helping.

  • @meghatiwari1984
    @meghatiwari1984 3 роки тому +16

    Sir You teach effortlessly. You have my deepest thanks sir.

  • @bbmaria5588
    @bbmaria5588 4 роки тому +81

    u're making me love chemistry, sir. thank u for this!!!

    • @ManochaAcademy
      @ManochaAcademy  4 роки тому +21

      Glad you like them!

    • @madhusankeshwari5323
      @madhusankeshwari5323 4 роки тому +9

      @@ManochaAcademy Sir only upto calcium we have to learn for the board examination😭😭😭 please sir tell fast tomorrow I have pre board exam.

    • @Word_of_jesus__
      @Word_of_jesus__ 4 роки тому +4

      @@madhusankeshwari5323 yes

    • @Word_of_jesus__
      @Word_of_jesus__ 4 роки тому +2

      @@madhusankeshwari5323 we only have upto calcium

    • @anasplays7785
      @anasplays7785 3 роки тому

      Ota to the core madan op😁

  • @thefinalelijahsmessage1802
    @thefinalelijahsmessage1802 2 роки тому +11

    I like how he is making it simple to understand

  • @namanbelwalsreviews2581
    @namanbelwalsreviews2581 4 роки тому +18

    What an explanation sir....I was not able to understand in class but my
    concepts are mastered by your video....Thanku for this video.....

  • @balbirkaur5644
    @balbirkaur5644 4 роки тому +18

    Waoo, I have just feel like masters in modern periodic table...❣🙏🙏
    Thnx alot sir ....

  • @kaifqureshi3714
    @kaifqureshi3714 4 роки тому +60

    I dont know why but whenever I see ur videos half of my tension flew away automatically ....that's the sign of the legendary teacher 🙏

  • @sowjanyaalugonda9152
    @sowjanyaalugonda9152 2 роки тому +14

    I'm an new IIT 8th student. I just joined this year. I really don't know anything in chemistry. Thanks for explaining periodic table. Now I got an idea about periodic table😊

  • @Roberto-REME
    @Roberto-REME 4 роки тому +13

    You do an excellent job of explaining in an understandable way. The production of the video is good and the narration is excellent.

  • @bananimalakar4935
    @bananimalakar4935 4 роки тому +10

    You have cleared all my doubts about Periodic table , thank you sir for teaching wonderfully.

    • @ManochaAcademy
      @ManochaAcademy  4 роки тому

      You are most welcome. Please share with your friends.

  • @jaseminemercy2494
    @jaseminemercy2494 4 роки тому +17

    You really deserve a million subscribers!!

  • @rosecaruso6487
    @rosecaruso6487 Рік тому +5

    INCREDIBLE, BEST VIDEO ON THIS!! Seriously, I knew from the start this would be a phenomenal video. I love how everything was broken down, interactive, and visually and explained sequentially. You explained everything so cohesively. Thank you :) 🙏

  • @aryandubey4439
    @aryandubey4439 3 роки тому +11

    Just the kind of interactive and wonderful teacher every student wants

  • @akarshsrivastava4894
    @akarshsrivastava4894 4 роки тому +20

    One of the best UA-cam channel, sir you are doing great job , i wish one day your channel will cross 💯 Million subscribers ...

  • @hamdanalbadi2891
    @hamdanalbadi2891 3 роки тому +26

    if I knew this 40 years ago I will be different person now. anyway it is good for me to know to be able to teach my grandchildren. thank you sir

  • @DianadMulalu
    @DianadMulalu Місяць тому +16

    Who else is watching this in December 2024 for the final exam in semester one

  • @pushpad2395
    @pushpad2395 4 роки тому +29

    Sir ur simply amazing .I am in love with ur teaching n I understand each and every concept clearly..😃 Thank you sir...

  • @smilemore45
    @smilemore45 4 роки тому +6

    Sir your teaching style is really amazing

  • @venthanmaniel7505
    @venthanmaniel7505 3 роки тому +4

    Sir your explanation is amazing.All the best for your videos

  • @nisarnawaz181
    @nisarnawaz181 2 роки тому +4

    that is reason India is well developed in education, no word to define your video simply awesome

  • @muhammadshoaib3358
    @muhammadshoaib3358 3 роки тому +4

    One of the best video about periodic table I've watched

  • @Aditya-ch1dh
    @Aditya-ch1dh 4 роки тому +6

    I am looking your chanel for the first time and can't stop myself to subscribe it......
    Thanks for the video great way of explaining......😸😸

  • @TejasDhule
    @TejasDhule 2 роки тому +29

    I'm not an Secondary/Higher secondary class student .... And not preparing for my first board exam still watching this video.......😅.... Because I'm unemployed graduate preparing for Government Exams 😅...... So students .... Pay attention carefully now because after 6-7 years you also have to come back to the same video if not learned this now 😅👌...... Best of Luck .... Lots of struggle ahead wating for you!

  • @pauvereducationalinstitute8209

    So far, best teacher ... Very clear, this teacher will just make You love chemistry,.. love chemistry... Wow... Keep it up...

  • @jeffreyschnitman2484
    @jeffreyschnitman2484 3 роки тому +4

    Mr. Mancha,
    You speak very clearly and concise.
    I enjoy watching and learning from your videos. Thank you

  • @TheGuy47YT
    @TheGuy47YT 3 роки тому +5

    We need Teachers like you in our schools !! nice explanation :))

  • @paavan78
    @paavan78 3 роки тому +71

    Sir you made me Getting more marks in chemistry in pre board exams even After not studying in Lockdown 🙏🏻

  • @Relatablestuffings
    @Relatablestuffings 9 місяців тому +2

    Never saw an explanation like this, great 👌🏻🤌🏻😭✨🌸

  • @krazyjey
    @krazyjey 2 роки тому +9

    What a pleasure to learn with you, at 50 years old, i am always keen to go through your lessons and get a pen and paper ready, 11 thanks.

  • @npsai_985
    @npsai_985 3 роки тому +7

    Thank you sir...For making the concept so ease to learn... Iam very excited with the questions and the concept of explanation...
    🙏🏻❤️

  • @florenceamaka3241
    @florenceamaka3241 Рік тому +6

    Iam a Nigerian and I love watching your teachings sir you're doing a great job.

  • @aladetolulope1228
    @aladetolulope1228 2 роки тому +7

    All the way from Nigeria I really enjoyed this

  • @ibembiarubam3586
    @ibembiarubam3586 3 роки тому +5

    I was so boring when i was studying modern periodic table in class 10-12 but now i m interested n understand after i have watched your periodic table's video on UA-cam.....
    So i must say i like you n your videos.....
    Upload interesting n enjoyable more plz...
    I m waiting for further your videos....😍😍😍

  • @lordsonmerlynch7
    @lordsonmerlynch7 2 роки тому +11

    Really Thank you so much for your wonderful class sir..this makes me more understandable...now I can say that I am the Gem of Modern Periodc table..

  • @vijaymahajan3506
    @vijaymahajan3506 4 роки тому +4

    Sir you are teaching so well, and in lockdown schools are closed but you are our teacher .I am Harshad mahajan.Thanku sir

  • @afsarwarsee6475
    @afsarwarsee6475 2 роки тому +2

    I was confused in periodic table before watching this video.
    Sir, you made it very easy to understand.
    For you: Hats off

  • @krishnavenithuniki4022
    @krishnavenithuniki4022 3 роки тому +6

    Nice explanation... 👍 understanding good... 👍 👍🙏Thank you sir......

  • @manonmani8446
    @manonmani8446 4 роки тому +16

    it's very easy to understand .....thank u so much sir.
    From Tamil Nadu.

  • @abiramirajakumar7716
    @abiramirajakumar7716 3 роки тому +4

    Amazing sir,I have my test today you made it easy

  • @muskanchaudhary710
    @muskanchaudhary710 2 роки тому +5

    Such a calm explanation

  • @basimal-sihli2090
    @basimal-sihli2090 4 роки тому +5

    Excellent job , Appreciated . Really you make it clear

  • @seemiahmedfirdous6758
    @seemiahmedfirdous6758 4 роки тому +8

    Really nice explanation sir I understood everything 👍👍

    • @ManochaAcademy
      @ManochaAcademy  4 роки тому +4

      Thanks a lot :) Do share it with your friends!!

  • @AdemolaOyelopo-nm9ru
    @AdemolaOyelopo-nm9ru Місяць тому +4

    Periodic table is interestingly presented. I love the teacher.

  • @abida7682
    @abida7682 2 роки тому +4

    This video made me a master of period table....thank you sir..👍😊😊

    • @sreehari6872
      @sreehari6872 2 роки тому +1

      When this was posted and when legends like us are watching

  • @YatharthSharma-g9n
    @YatharthSharma-g9n Рік тому +5

    7:15 Sir You Said Thats The electronic configuration but it is shell configuration
    Electronic Configuration have A Table Like This :-
    1s
    2s 2p
    3s 3p 3d
    4s 4p 4d 4f
    5s 5p 5d 5f (there are more letters from now on, but we don't need)
    6s 6p 6d
    7s 7p
    8s
    s=2 electrons
    p=6 electrons
    d=10 electrons
    f=14 electrons

  • @dibbonath9146
    @dibbonath9146 5 місяців тому +5

    Your explanation is really great.iam watching from Bangladesh.🇧🇩

  • @beastyt..8135
    @beastyt..8135 2 роки тому +4

    Thank you sir ...your teach soo nicely which made all of us to understand properly !!......thanks a lot 🙏

  • @krishnabattula7225
    @krishnabattula7225 Рік тому +3

    I am a 61 year old senior citizen trying to learn Chemistry. I find your teaching extremely lucid and looking forward for more vedios. You are a great teacher.

  • @rafii-baloch9341
    @rafii-baloch9341 3 роки тому +4

    Sir ! I Highly appreciate your reaching method 👏🏻

  • @terimkcseggsy
    @terimkcseggsy 3 роки тому +5

    I'M FINALLY UNDERSTANDING CHEMISTRY...THANK YOU SIR🙇‍♀️🙇‍♀️

  • @yallappayalla650
    @yallappayalla650 4 роки тому +4

    Your teaching is wonderful and 👌👌👌👌

  • @alienIk761
    @alienIk761 2 роки тому +2

    Best sir ever ...Sir your teaching technique is absolutely excellent..

  • @sandhyaca5333
    @sandhyaca5333 4 роки тому +5

    SIR U R HUST AMAZINGG....MAKING ALL CONCEPTS EASYY PEASY

  • @samarthnair9359
    @samarthnair9359 4 роки тому +8

    Sir, this is one of the most detailed video I have seen on the periodic table. Loved it. Plus the previous videos are worth appreciating. Thank you sir.

  • @euphoria9239
    @euphoria9239 4 роки тому +5

    It's really very helpful
    Thanks a million Sir🙏💜

  • @abdullah.316
    @abdullah.316 2 роки тому +1

    What a style of teaching!
    Every video is amazing,helpful and also easy to understandable .
    Ours every doubt remove after watching your conceptual video.

  • @gayathrianbalagan7130
    @gayathrianbalagan7130 4 роки тому +5

    Sir do more videos in iupac nomenclature and isomerism..pls. thanks a lot....god bless u.😍

  • @danipriti6953
    @danipriti6953 3 роки тому +6

    It was fun and so easy to understand.

  • @muhammadsaghir6532
    @muhammadsaghir6532 4 роки тому +5

    Thank you. Nothing was new for me but the way you presented is highly appreciated.

  • @KhorgatluakManyal
    @KhorgatluakManyal 22 дні тому +1

    I already love your teaching process, thanks you so much.

  • @shailendrakumarsingh7677
    @shailendrakumarsingh7677 4 роки тому +4

    Great explanation with easy tricks

  • @yarrojuanudeep8813
    @yarrojuanudeep8813 4 роки тому +5

    nice, superb and thank you very much monocha sir

    • @ManochaAcademy
      @ManochaAcademy  4 роки тому +1

      You are most welcome

    • @yarrojuanudeep8813
      @yarrojuanudeep8813 4 роки тому +1

      thank you very much monocha sir for giving reply,and i understood the concept and i will see all videos and i will learn

  • @binitajha1869
    @binitajha1869 4 роки тому +6

    Thanks a lot Sir❤. I'm a tenth standard student and I got this very useful in clearing doubts of this chapter during this lockdown.

    • @queenvambe2816
      @queenvambe2816 4 роки тому +1

      Yeah well exaplained

    • @smitap.8405
      @smitap.8405 3 роки тому

      Very well explained. I am not a science stream student, but your video got me gripped. Enjoyed it thoroughly and rejigged my memory. Thank you.

  • @chidakashpandey830
    @chidakashpandey830 2 роки тому +3

    Loved the class.. enriching and Interesting at the same time

  • @paranjaysinhgohil7700
    @paranjaysinhgohil7700 3 роки тому +6

    Good video sirrr..
    I get a great help from this video.... 😇😇 u r great 😊😊

  • @mroverpowered9209
    @mroverpowered9209 4 роки тому +14

    Hello sir!
    Sir we are gonna appear our science after 3days
    Hope your wishes and blessing are with us...
    Thank you sir!!!! For this video....😃😃😃😃

  • @opblack0076
    @opblack0076 3 роки тому +6

    Sir what editor are you using ,pls reply 😊😊

  • @lisaxdance8158
    @lisaxdance8158 2 роки тому +3

    Thankyou sir nice understanding☺️ first at online classes I didn't understand anything,but after watching this video..........💭 I remember every point you have just thought.......such a brilliant teacher you are ! hats up 🙌👏

  • @poppysdiary8347
    @poppysdiary8347 3 роки тому +5

    thank u, sir. In this video, I can understand more about the periodic table

  • @xynie2154
    @xynie2154 2 роки тому +5

    Your video came right on time
    I achieved 320 in my jamb exams
    Thankyou💕

  • @sathart_7
    @sathart_7 3 роки тому +4

    Really I became a master in periodic table because of a master teaching. Thanks sir for making our studies easy

  • @RuthBarnabas-bu2kp
    @RuthBarnabas-bu2kp 9 місяців тому +1

    I didn't understand anything in my yesterday lectures but watching this gave me best learning and understanding about periodic table😊🎉. Your the best teacher sir, thank you

  • @hinatahyuga457
    @hinatahyuga457 2 роки тому +13

    Nitrogen tried to flirt with oxygen and she said NO .......
    Nitrogen broke 💀

  • @ummulkheirabdirizaq3840
    @ummulkheirabdirizaq3840 3 роки тому +4

    To be honest u r my hero thank u for saving me I love the way u explain so clean 💖💓

  • @adisalunke4560
    @adisalunke4560 4 роки тому +4

    Thanks A Lot Sir...
    You Cleared All My Doubts.

  • @zaynabnoor3926
    @zaynabnoor3926 2 роки тому +2

    Amazing explanation. Very easy to understand and comprehend. Thank you

  • @amishasaju1670
    @amishasaju1670 4 роки тому +5

    sir, even if i am so poor in chemistry you had made it superrrr.......... easy for me . Thank u sir...............

  • @divijamalika9046
    @divijamalika9046 4 роки тому +7

    Thank you!! very much sir its very helpful!!!

  • @Indeliblemark0000
    @Indeliblemark0000 Рік тому +7

    Excellent teaching

  • @tamararobinson4299
    @tamararobinson4299 9 місяців тому +1

    Wow. I find science so interesting. Your explanations are very clear. Great job. I will be showing this video to my students. Watching from Jamaica 🇯🇲 , 13.03.2024

  • @channelclosed728
    @channelclosed728 4 роки тому +4

    Thanks for the vid sir! Helped me a lot to prepare for school in advance! Keep it up!!! :)

  • @ashokkumarsonakamble4078
    @ashokkumarsonakamble4078 4 роки тому +5

    Your explanation is very nice

  • @prajjwalsaha9091
    @prajjwalsaha9091 4 роки тому +5

    Sir, you are really a god gifted teacher. It helped me a lot...

  • @lokeshpandu2515
    @lokeshpandu2515 Рік тому +5

    Your explanation is very excellent 👍

  • @abdisalammohdadam1483
    @abdisalammohdadam1483 4 роки тому +15

    Sir plZ start lessons about mathematic like trigonometry Algebra calculus & i.t.c

    • @ManochaAcademy
      @ManochaAcademy  4 роки тому +5

      Yes I'll be uploading Math videos soon!!

  • @SirajKhan-cr2zh
    @SirajKhan-cr2zh 2 роки тому +5

    The way you explain a topic is really exceptional. I really love and appreciate your methodology. Keep it up & more success to you!

  • @chandapawar9938
    @chandapawar9938 8 днів тому +4

    Teaching method is good

  • @aiu-yg3sp4wy3v
    @aiu-yg3sp4wy3v 8 місяців тому +3

    The periodic table is a tabular array of the chemical elements organized by atomic number, from the element with the lowest atomic number, hydrogen, to the element with the highest atomic number, oganesson.
    The periodic table of chemical elements, often called the periodic table, organizes all discovered chemical elements in rows (called periods) and columns (called groups) according to increasing atomic number.
    The modern or long form of the periodic table is based on the modern periodic law. The table is the arrangement of elements in increasing order of their atomic numbers. The modern periodic table is the present form of the periodic table. And it consists of 18 vertical columns and 7 horizontal rows.
    A period is a horizontal row of the periodic table. There are seven periods in the periodic table, with each one beginning at the far left. A new period begins when a new principal energy level begins filling with electrons. Period 1 has only two elements (hydrogen and helium), while periods 2 and 3 have 8 elements.
    The main points of the periodic table:
    Each column is called a group. All elements in a group have similar chemical and physical properties because they have the same number of outer electrons. Periods - In periodic table elements are arranged in a series of rows. Elements of the same period have the same number of electron shells.
    Dmitri Mendeleev is often referred to as the Father of the Periodic Table. He called his table or matrix, "the Periodic System".
    Shapes of the periodic table
    The Race-Track Periodic Table (1933) ...
    The Spiral Periodic Table (1960) ...
    The Curled-Ribbon Periodic Table (1975) ...
    The Adomah Periodic Table (2006) ...
    The Periodic Table of Element Scarcity (2018) ...
    The Periodic Table of Chemical Bonds (2019).
    On the periodic table, elements are listed in order of increasing atomic number. Elements in the same row are in the same period. This means they have similar physical properties, such as how well they bend or conduct electricity. Elements in the same column are in the same group.
    Valency:
    For example; If the number of electrons present in the valence outermost shell are 4,3,2,1 then their valency will be 4,3,2,1 respectively. If the number of electrons present in the valence outermost shell, then their valency is 8-5=3, 8-6=2, 8-7=1 respectively.
    The periodic table is rectangular in shape, consisting of rows and columns of elements arranged in a specific order. The periodic table has a total of seven rows, called periods, and 18 columns, called groups.
    A modern periodic table arranges the elements in increasing order of their atomic numbers and groups atoms with similar properties in the same vertical column (Figure 3.2. 2). Each box represents an element and contains its atomic number, symbol, average atomic mass, and (sometimes) name.
    The periodic table is the most important reference a chemist has because it puts all the known elements into a meaningful pattern. Elements are arranged left to right and top to bottom in order of increasing atomic number. This order generally goes with increasing atomic mass.
    18 groups in periodic table:
    Groups are numbered 1-18 from left to right. The elements in group 1 are known as the alkali metals; those in group 2 are the alkaline earth metals; those in 15 are the pnictogens; those in 16 are the chalcogens; those in 17 are the halogens; and those in 18 are the noble gases.
    ( kmadhavameducation@gmail.com/ +91-8252771261/ Address: C/O Shri Dinesh Singh(Govt.Teacher,UP) & Smt. Seema Singh(Teacher), Gurukripa Bhawan, Near Marriage Hall, Ashapuri Colony, Ashapur,Sarnath, Benaras( Uttar Pradesh).

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    @devendersingh8489 3 роки тому +5

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    @KakaUmaru-ui2mu Рік тому +4

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    @mawedits4972 Рік тому +5

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  • @gianna-ocg96
    @gianna-ocg96 9 місяців тому +1

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