The 3d elements show variable oxidation state | vedclass

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Question

(A) The transition elements (specifically $3d$ elements) exhibit variable oxidation states because the energy difference between the $(n-1)d$ orbitals

Vedclass · Accepted Answer

$ns, (n-1)d$

Vedclass · Answer

(A) The transition elements (specifically $3d$ elements) exhibit variable oxidation states because the energy difference between the $(n-1)d$ orbitals and the $ns$ orbitals is very small. Due to this small energy gap,electrons from both the $(n-1)d$ and $ns$ orbitals can participate in bond formation,allowing these elements to show multiple oxidation states.

The $3d$ elements show variable oxidation states because the energies of the following sets of orbitals are almost similar:

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