$({{l}_{p}}-{{b}_{p}})$ repulsion $= 4$ and
$({{b}_{p}}-{{b}_{p}})$ repulsion $= 2$
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$B.E(N -N) = 159\, kJ\, mol^{-1}$,
$B.E(H -H) = 436\, kJ\, mol^{-1}$
$B.E.(N \equiv N) = 941\, kJ\, mol^{-1}$,
$B.E(N -H) = 398\, kJ\, mol^{-1}\, .......\,kJ\, mol^{-1}$
the number of sigma and pi bonds respectively are
$CaCO _3( s ) \rightleftharpoons CaO ( s )+ CO _2( g )$
For this equilibrium, the correct statement(s) is (are)
$(A)$ $\Delta H$ is dependent on $T$
$(B)$ $K$ is independent of the initial amount of $CaCO _3$
$(C)$ $K$ is dependent on the pressure of $CO _2$ at a given $T$
$(D)$ $\Delta H$ is independent of the catalyst, if any