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Bond enthalpy values
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Match List-I with List-II (Molecule; Bond enthalpy in kJ mol$^{-1}$) and choose the correct answer from the options given below:
Column I
- A. HCl
- B. N2
- C. H2
- D. O2
Column II
- I. 435.8
- II. 498
- III. 946.0
- IV. 431.0
Correct answer: A → IV, B → III, C → I, D → II
HCl has bond enthalpy 431.0 kJ/mol (A-IV); $N_2$ has bond enthalpy 946.0 kJ/mol (B-III); $H_2$ has bond enthalpy 435.8 kJ/mol (C-I); $O_2$ has bond enthalpy 498 kJ/mol (D-II).