MCQ
The correct order of bond enthalpy $\left( kJ\,mol ^{-1}\right)$ is :
- A$Si - Si > C - C > Sn - Sn > Ge - Ge$
- B$Si - Si > C - C > Ge - Ge > Sn - Sn$
- C$C - C > Si - Si > Sn - Sn > Ge - Ge$
- ✓$C - C > Si - Si > Ge - Ge > Sn - Sn$
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$B.E(N -N) = 159\, kJ\, mol^{-1}$,
$B.E(H -H) = 436\, kJ\, mol^{-1}$
$B.E.(N \equiv N) = 941\, kJ\, mol^{-1}$,
$B.E(N -H) = 398\, kJ\, mol^{-1}\, .......\,kJ\, mol^{-1}$