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NEET Chemistry p Block Elements (Group 15, 16, 17 & 18) 2024 NEET 2024 (Re-NEET)

NEET Chemistry Question (2024) — Solution

Question

Identify the incorrect statement from the following:

Options

  1. A. The acidic strength of HX (X= F , Cl , Br and I) follows the order: HF HCl HBr HI .
  2. B. Fluorine exhibits -1 oxidation state whereas other halogens exhibit +1,+3,+5 and +7 oxidation states also.
  3. C. The enthalpy of dissociation of F _2 is smaller than that of Cl _2.
  4. D. Fluorine is stronger oxidising agent than chlorine.

Answer

A. The acidic strength of HX (X= F , Cl , Br and I) follows the order: HF HCl HBr HI .

Step-by-step solution

The acidic strength of HX follows the order HF HCl HBr HI This is because bond enthalpy of hydrides of group 17 decreases down the group.

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Related: Chemistry — p Block Elements (Group 15, 16, 17 & 18) · All PYQ Banks