Question

Why transition elements have variable oxidation states?

Answer 1

Transition elements can have different oxidation states. Most of the elements show variable oxidation states. The reason being when transition metals form compounds, the electrons present in ns and (n-1)d orbitals can participate in bonding due to almost similar energies.

Answer 2

$\huge\red{heya!!!!}$

because in bond formation ns as well as( n-1)d both take part in a reaction due to almost similar energy.

thanks