NTA Abhyas NEET2020Chemistryp Block Elements (Group 15, 16, 17 & 18)Practice
In which of the following arrangements, the sequence is not strictly according to the property written against it?
Options
- AH F < H C l < H B r < H I : increasing acid strength
- BN H 3 < P H 3 < A s H 3 < S b H 3 : increasing basic strength
- CB < C < O < N : increasing first ionization enthalpy
- DC O 2 < S i O 2 < S n O 2 < P b O 2 : increasing oxidising power
Correct answer
B. N H 3 < P H 3 < A s H 3 < S b H 3 : increasing basic strength
Step-by-step solution
As the correct basic strength order is as follows N H 3 > P H 3 > A s H 3 > S b H 3 Rest all are correct here.