Question

Set of d-orbitals which is used by central metal during formation of mno4?

Answer 1

Answer:

This is formally a manganese(VII) compound and hence there are no 3d electrons.

The four O2−OX2− ions are considered to be donating two electrons each to the atomic orbitals. Tetrahedral "hybridisation" can be achieved by using the 4s, 3dxy, 3dyz4s, 3dxy, 3dyz, and 3dxz3dxz AOs. Since in Mn(VII) the 3d3d AOs are lower in energy than the 4s4s and 4p4p AOs, the "hybridisation" is best considered as d3sd3s.

I have put "hybridisation" in quotes because it is not used in advanced chemistry (it is an artifact!) but it is correct in saying that the bonding MOs contain mostly 4s, 3dxy, 3dyz4s, 3dxy, 3dyz character but they'll also probably mix some 4p4p character in there for good measure!

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