The correct order of the mean bond energies in the binary hydrides is: · ABC26IN0792
Subject: Inorganic Chemistry · Chapter: Periodic Properties · Topic: Periodic Properties – General · Exam: JAM 2005-2022 · Marks: 2 · Difficulty: Hard
The correct order of the mean bond energies in the binary hydrides is:
(a)$\mathrm{CH}_{4}>\mathrm{NH}_{3}>\mathrm{H}_{2} \mathrm{O}>\mathrm{HF}$
(b)$\mathrm{NH}_{3}>\mathrm{CH}_{4}>\mathrm{H}_{2} \mathrm{O}>\mathrm{HF}$
(c)$\mathrm{HF}>\mathrm{H}_{2} \mathrm{O}>\mathrm{CH}_{4}>\mathrm{NH}_{3}$
(d)$\mathrm{HF}>\mathrm{H}_{2} \mathrm{O}>\mathrm{NH}_{3}>\mathrm{CH}_{4}$
Answer
Answer: C ✓ checked by 4AB · confidence high
Explanation
Mean bond enthalpies: H–F 565, O–H 463, C–H 413, N–H 391 kJ mol⁻¹. So HF > H₂O > CH₄ > NH₃.
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