- Exam
- JEE Main
- Year
- 2023
- Date
- 12 April
- Shift
- Morning Shift
- Subject
- Chemistry
- Chapter
- Structure of Atom
JEE Main 2023 · 12 April · Morning Shift · Chemistry · Structure of Atom
Given below are two statement : one is labelled as Assertion A and...
Given below are two statement : one is labelled as Assertion A and the other is labelled as Reason R
Assertion A : electron can participate in bonding to a far greater extent than electrons
Reason R : orbitals are not as buried as orbitals
In the light of the above statements, choose the correct answer from the options given below
Options
- AA is false but R is true
- BBoth A and R are true and R is the correct explanation of A
- CA is true but R is false
- DBoth A and R are true but R is NOT the correct explanation of A
Correct answer
B. Both A and R are true and R is the correct explanation of A
Step-by-step solution
The distance between the nucleus and 5f orbital is more than the distance between the nucleus and 4f orbital. Hence the hold of nucleus on valence electron decrease in 5f orbital. 5f orbital not buried as 4f oribitals so electron present in 5f orbital experience less nuclear attraction than electron present in 4f orbital. Hence electrons of 5f orbital can take part in bonding to far great extent.