MHT CET 2024 Chemistry question
Not in JEE Main or NEET syllabus
Which element from following combines with hydrogen to form a compound with lowest thermal stability?
Answer: (B)
Solution
Thermal stability of the hydrogen halides depends on the H-X bond strength, which decreases down the group as the size of X increases and the orbital overlap with H becomes poorer: bond enthalpies (kJ mol) are H-F 574, H-Cl 431, H-Br 364, H-I 297. So the
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