Which of the following statements is/are correct

Options

A. Silicon can form long chains like carbon
B. Si - O bonds are weaker than Si - Si or Si - H bonds
C. Silicon can expand its octet unlike carbon
D. Silicon can form multiple bonds like carbon

Answer

C

Explanation

Carbon is the most electronegative element of the group. The electronegativity decreases from C to Pb but not in a regular manner possibly due to filling d and f-orbitals