Identify the incorrect statements from the following I . Tin in + 2 state acts as reducing agent while lead in + 4 state acts as strong oxidising agent. II . Silicon exists as both SiF 6 2 - and SiCl 6 2 - forms. III . The hybridisation of carbon in fullerene is sp 3 . IV . Among Ge ,   Sn and Pb lowest melting point is for Sn .

Step-by-step solution

Correct statments are:- I . Tin in + 2 state acts as reducing agent while lead in + 4 state acts as strong oxidising agent. II . Silicon exists as both SiF 6 2 - but not as SiCl 6 2 - due to steric hindrance. III . The hybridisation of carbon in fullerene is sp 3 . IV . Among Ge ,   Sn and Pb lowest melting point is for Pb . Thus, II and IV are incorrect.