A) \[HCl\] is more stable than HP
B) \[HF\] and \[HCl\] are exothermic compounds
C) The affinity of fluorine to hydrogen is greater than the affinity of chlorine to hydrogen
D) \[HF\] is more stable than \[HCl\]
Correct Answer: A
Solution :
HF is more stable than \[HCl\]. The reason is that in the formation of HF, more energy is produced. It means, HF has less energy than \[HCl\] and hence is more stable. In other words, we need more energy to break \[H-F\] bond, hence HF is more stable.
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