COMEDK · Chemistry · 22. p Block Elements (Group 15, 16, 17 & 18)
Which among the following is NOT in accordance with the property stated against it?
- A \(F_2 > Cl_2 > Br_2 > I_2\) [Oxidising Power]
- B \(HI > HBr > HCl > HF\) [Acidic Property in Water]
- C \(F_2 > Cl_2 > Br_2 > I_2\) [Electronegativity]
- D \(F_2 > Cl_2 > Br_2 > I_2\) [Bond Dissociation Energy]
Answer & Solution
Correct Answer
(D) \(F_2 > Cl_2 > Br_2 > I_2\) [Bond Dissociation Energy]
Step-by-step Solution
Detailed explanation
The oxidising power of halogens decreases down the group: \(F_2 > Cl_2 > Br_2 > I_2\). The acidic strength of hydrogen halides in water increases down the group due to a decrease in bond dissociation enthalpy: \(HI > HBr > HCl > HF\). Electronegativity decreases down the group:…
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