13.1 Transition Metals, their Complexes and Magnetism [HL IB Chemistry]

[@magdalenamozdzierz7546]

Love the way it is explained! If only my teacher could explain every chapter like these videos...

[@daulatbhosale6057]

Dear sir you are truly awesome at teaching. It’s so magical .

[@victormoncada807]

I LOVEE your channel my dude. Thank you so much

[@debbiezhang2053]

What is a domain? I've been looking through 2 of my text book and one of the revision guide but none of them gives me a reason why only iron,cobalt and nickel are ferromagnetic and what is domain....

[@juliusmaximus3398]

+Debbie Zhang My textbook defines a domain to be "regions where unpaired d electrons line up with parallel spins"

[@SolutionsInChemistry]

A domain is a region inside of a solid material where groups of atoms naturally align in the same direction. All the atoms that are aligned in one direction are in one domain and those aligned in a different direction another domain. The domains are arranged randomly and can cancel out each other’s ferromagnetism. Iron is a material in which the domains can be aligned, using a strong magnetic field, and exhibits a strong magnetic force.

[@haydenkwok7027]

3:28 i thought cobalt was ferromagnetic?

[@pratyushmenon1202]

So is there like a specific cut-off in the spectrochemical series that divides the ligands which produce such a large energy gap that the electrons fall down and pair up below, or are the only 2 ligands that do this CO and CN-? Also, when this happens, are the complexes still colored or do they lose their color?
Thanks for the help!

[@ibchemvids]

The IB will probably only use the CO , CN- examples that still have colour. Ligand colour depends on oxidation state of the central ion, type of ion, number of ligands, solvent and type of ligand. So all bets are off in reality.

[@pratyushmenon1202]

thanks for the clarification!

[@hydrogen1562]

Why is CoCl2 paramagnetic and not ferromagnetic?

[@bebridge3023]

this is what he said "Cobalt metal is ferro, the Co2+ ion is para"

[@hermannklein-hessling7612]

Why does CO have an oxidation state of 0?

[@ibchemvids]

Co has an oxidation state of zero, it is coblat

[@hermannklein-hessling7612]

@@ibchemvids OH makes sense

[@acedes8689]

Why is iron ferromagnetic but manganese is paramagnetic?

[@zmzm202079]

Hi Mr. Thornley, at min 3:01 the electron configuration for Mn should be: 4s2 3d5 and so, Mn2+ should be: 3d5, not 4d5 (unless I missed something out) and yeah I reaaaally love your videos :))

[@ibchemvids]

Yeah - I fixed that with an annotation but these do not show up on all devices eg phones.

[@hyungjunkim7503]

Does Ferromagnetism only apply to the pure metals of Fe, Ni and Co? Because you said that CoCl2 is paramagnetic, but Co is ferromagnetic

[@hetvishah963]

Same Question...

[@Mol2412w3]

thank you :))

[@samisabbah52]

In the beginning of the video you say cobalt is ferromagnetic and then in the next part you say that it is paramagnetic?

[@ibchemvids]

Cobalt metal is ferro, the Co2+ ion is para

[@samisabbah52]

Richard Thornley thank you!

[@mattcousins6456]

great video thanks!