Question

The reason(s) for the lower stability of $Si_2H_6$ compared to $C_2H_6$ is/are

• A. silicon is more electronegative than hydrogen
• B. Si-Si bond is weaker than C-C bond
• C. Si-H bond is weaker than C-H bond
• D. the presence of low-lying d-orbitals in silicon

Answer 1

Answer: (B), (C), (D)

Si-Si bond is weaker than C-C bond

Answer 2

The correct option is (B): Si-Si bond is weaker than C-C bond, (C): Si-H bond is weaker than C-H bond and (D): the presence of low-lying d-orbitals in silicon