Given below are two...| The p-Block Elements |JEE-Main 2022

JEE MAIN 2022

29-06-2022 S2

Question

Given below are two statements. One is labelled as Assertion A and the other is labelled as Reason R. Assertion A : The first ionization enthalpy for oxygen is lower than that of nitrogen. Reason R : The four electrons in 2 p orbitals of oxygen experience more electron-electron repulsion. In the light of the above statements, choose the correct answer from the options given below.

Select the correct option:

Both A and R are correct and R is the correct explanation of A.

Both A and R are correct but R is NOT the correct explanation of A.

A is correct but R is not correct.

A is not correct but R is correct

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

lonisation energy $=\mathrm{N}>\mathrm{O}$. In oxygen atom, 2 of the $4 2 p$ electrons must occupy the same $2 p$ orbital resulting in an increased electron electron-repulsion.

Question Tags

JEE Main

Chemistry

Easy

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