Question

The correct statement with respect to the property of $IVA$ group elements is:

• A. their metallic nature decreases from carbon to lead
• B. the stability of $+2$ oxidation state increases from carbon to lead.
• C. IP value increases from carbon to lead.
• D. atomic radius decreases from carbon to lead.

Answer 1

The correct option is B the stability of $+2$ oxidation state increases from carbon to lead.

This is due to inert pair affect which is nothing but non participation of electrons in s orbital though they are in the valence shell.Hence instead of donating $4$ electrons as we move down in a group it donates only $2$ electrons due to this affect.