Please explain all options
I think something is wrong either in answer key or explanation
Strong field/Large energy to Weak field/Small energy
And in explanation
(under = Lower)
The explanation is right.
Okay then answer key is wrong right?
B should be correct instead of A
Can u explain option D also?
Molecules with unequally occupied degenerate orbitals will distort.
(NH4)2[CuCl4] square planar complex but Cs2[CuCl4] is distorted tetrahedral. Due to the borderline electronic effects, the [CuCl4]2- anion exhibits a great degree of structural flexibility. With large cations (Cs+ radius is 0.174 nm while NH4+ radius is 0.143 nm) , it crystallizes as a distorted ("squashed") tetrahedron.
The cation is never allowed to "rattle" around, so the structure will find a way to fill in space. Given the preexisting electronic favourability of square planar geometry, (NH4)2[CuCl4] this distortion favoured by close-packing is made even more favourable.
is jahn teller theorem in jee syllabus or not?