NTA Abhyas NEET2020Chemistryp Block Elements (Group 15, 16, 17 & 18)Practice
Which of the following is correct statement ?
Options
- AF 2 has higher dissociation energy than Cl 2
- BF has higher electron affinity than Cl
- CHF is stronger acid than HCl
- DBoling point increases down the group in halogens
Correct answer
D. Boling point increases down the group in halogens
Step-by-step solution
(1) – Bond dissociation energy of F 2 is less that of Cl 2 (2) – Cl has higher E.A. than fluorine. (3) – HF is weaker acid than HCl, due to higher bond energy. (4) B.P. ∝ Extent of Wanderwall’s forces.