Question

most stable oxidation state of bismuth is

Answer 1

most stable oxidation state o fc bismuth is 3

Answer 2

Answer: The most stable oxidation state of Bismuth is +3.

Explanation:

Bismuth belongs to Group 15 and Period 6. The valence electronic configuration of Bismuth is $[Xe]4f^{14}5d^{10}6s^26p^3$

This element has 5 valence electrons and has a oxidation state of +5.

But this oxidation state is not stable for Bismuth due to inert pair effect.

Inert pair effect is defined as the tendency of the two paired up electrons in the outermost s-orbital to remain unshared while bonding.

Hence, for Bismuth, the 6s electrons remains unshared and hence, the stable oxidation state for this element becomes +3.