Methane is quite stable, whereas silane is unstable because

Question

Methane is quite stable, whereas silane is unstable because (A) C— C bond energy is much greater than Si—Si bond energy (B) Si—H bond energy is much lower than C—H bond energy (C) Si has vacant p- orbitals which are more susceptible for nucleophilic attack (D) All of above reasons

Tardigrade Admin · Accepted Answer

Si—H bond energy is 393 k J / m o l Whereas, C—H bond energy is 435 k J / m o l DC — C ∼ eq 340 k J / m o l DS i — S i∼ eq368 k J / m o l C—C and Si—Si bond energies are comparable, while textSi - textH bond energy is lower than textC - textH bond energy, so methane is quite stable, whereas silane is unstable.

Q. Methane is quite stable, whereas silane is unstable because

$C — C$ bond energy is much greater than $S i — S i$ bond energy

$S i — H$ bond energy is much lower than $C — H$ bond energy

$S i$ has vacant $p -$ orbitals which are more susceptible for nucleophilic attack

All of above reasons

Q. Methane is quite stable, whereas silane is unstable because

C—C bond energy is much greater than Si—Si bond energy

Si—H bond energy is much lower than C—H bond energy

Si has vacant p− orbitals which are more susceptible for nucleophilic attack

All of above reasons

Si—H bond energy is 393kJ/mol Whereas, C—H bond energy is 435kJ/mol DC—C​∼eq340kJ/mol&DSi—Si​∼eq368kJ/mol C—C and Si—Si bond energies are comparable, while Si−H bond energy is lower than C−H bond energy, so methane is quite stable, whereas silane is unstable.

$C — C$ bond energy is much greater than $S i — S i$ bond energy

$S i — H$ bond energy is much lower than $C — H$ bond energy

$S i$ has vacant $p -$ orbitals which are more susceptible for nucleophilic attack