Question

What may be the stable oxidation state of the transition element with the following d electron configurations in the ground state of their atoms : 3d³, 3d⁵, 3d⁸and 3d⁴?

Answer 1

	Electronic configuration in ground state	Stable oxidation states
(i)	3d3 (Vanadium)	+2, +3, +4 and +5
(ii)	3d5 (Chromium)	+3, +4, +6
(iii)	3d5 (Manganese)	+2, +4, +6, +7
(iv)	3d8 (Cobalt)	+2, +3
(v)	3d4	There is no3d4 configuration in ground state.