Question

If the bond enthalpy of `O_(2),N_(2)" and "H_(2)` are 498, 946 and 435.8 kJ `mol^(-1)` respectively. Choose the correct order of decreasing bond strength.
A. `H_(2)gtN_(2)gtO_(2)`
B. `N_(2)gtO_(2)gtH_(2)`
C. `O_(2)gtH_(2)gtN_(2)`
D. `H_(2)gtO_(2)gtN_(2)`

Answer 1

(b) Larger the bond dissociation enthalpy, stronger will be the bond in the molecule.So, `{:(N_(2),gt,O_(2),gt,H_(2)),(946 kJ mol^(-1),,498 kJ mol^(-1),,435.8 kJ mol^(-1)):}`