MHT CET · Chemistry · p Block Elements (Group 15, 16, 17 & 18)
Which element from following combines with hydrogen to form compound having lowest acidic strength?
- A Cl
- B Br
- C F
- D I
Answer & Solution
Correct Answer
(C) F
Step-by-step Solution
Detailed explanation
Down the group the electronegativity decreases and the size increases. Thus, it becomes easy to lose \(\mathrm{H}^{+}\)ion. This causes the increase in acidic strength down the group.
Acidic strength order: \(\mathrm{HF} < \mathrm{HCl} < \mathrm{HBr} < \mathrm{HI}\)
Acidic strength order: \(\mathrm{HF} < \mathrm{HCl} < \mathrm{HBr} < \mathrm{HI}\)
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