Quantum Numbers Class 11 Chemistry

Quantum Numbers Class 11 Chemistry
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Quantum numbers are sets of numerical values that describe the unique quantum state of an electron in an atom. These numbers arise from the solutions to the Schrödinger equation for the hydrogen atom and define the properties of atomic orbitals and the electrons in those orbitals. There are four quantum numbers:
1. Principal Quantum Number (n):
- Symbol: n
- Description: Determines the energy level and size of the orbital. It can take positive integer values (1, 2, 3, ...).
- Example: For n = 1 , the electron is in the first energy level (closest to the nucleus).
2. Angular Momentum Quantum Number (l):
- Symbol: l
- Description: Determines the shape of the orbital. It can take integer values from 0 to n-1 .
- Example: For n = 3 , l can be 0, 1, or 2, corresponding to s, p, and d orbitals, respectively.
3. Magnetic Quantum Number (m):
- Symbol: m
- Description: Determines the orientation of the orbital in space. It can take integer values from -l to +l, including zero.
- Example: For l = 1 (p orbital), m_l can be -1, 0, or +1.
4. Spin Quantum Number (s):
- Symbol: s
- Description: Determines the spin orientation of the electron. It can take values of +1/2 or -1/2.
- Example: An electron in an orbital can have a spin of +1/2 (spin-up) or -1/2 (spin-down).
These quantum numbers are essential in quantum mechanics to describe the position and energy of electrons in atoms, and they follow the Pauli exclusion principle, which states that no two electrons in an atom can have the same set of all four quantum numbers.
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[@umeshkumartiwari9431]

subshell - 4....0s,1p,2d,3f
orbitals - 16....(n^२)
electrons - 32 (2n^२)
Thanku somuch sir💗

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I request you to teach the Electrochemistry ..l couldn't find it here on your Tubes channel

[@Shruti_Singh101]

In 4th shell :
No of subshell : 4
Values : 0,1,2,3
Name : 4s,4p,4d,4f
No of orbitals : 1,3,5,7
No of electrons : 32

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[@ManochaAcademy]

Most welcome!

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[@ManochaAcademy]

Will try to make that one too!

[@chandrakalaR-z8q]

Electrons:32; subshells:0,1,2,3;orbitals:16😢🎉❤

[@sarwathadn5656]

In the 4th shell:
No.of sub-shells are 4 they are l=0,1,2,3
No.of orbitals are 16. They are m=1,3,5,7
No. of electrons are 32.From the formula 2n^2

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[@mehrunnisabakshi7877]

Subshells = 0,1,2,3 orbitals = 16 electrons = 32

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[@ManochaAcademy]

You can use this video for competitive exams preparation. We have Courses for Class 11 on our website: www.manochaacademy.com

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[@paredeshinaiduadari9956]

Sir i have an doubt
If n=5 the sub shells is 0,1,2,3,4
Than the naming is
5s,5p,5d,5f, than after what can we write their the 4 namings are their😢

[@khaan018]

In 5th shell :
No of subshell : 5
Values : 0,1,2,3,4
Name : 5s,5p,5d,5f,5g
No of orbitals : 1,3,5,7,9
No of electrons : 50

[@paredeshinaiduadari9956]

@@khaan018 TQ

[@AngellaNakachwa]

How many subshells , electrons and orbitals in the fourth subshell
Subshells=4
Electrons=32
Orbitals=16

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A TEACHER CAN NEVER TELL THE BOUNDS OF HIS INFLUENCE.

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Subshell=3
Orbital =16
E= 32

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4 subshells,16 orbitals and 32elctrons

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5th comment

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English or Spanish

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