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  • Given below are two statements. One is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Energy of <img alt="2 \m

Given below are two statements. One is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: Energy of 2 \mathrm{~s} orbital of hydrogen atom is greater than that of 2 \mathrm{~s} orbital of lithium.
Reason R: Energies of the orbitals in the same subshell decrease with increase in the atomic number.

In the light of the above statements, choose the correct answer from the options given below.
 

Option: 1

Both \mathbf{A}$ and $\mathbf{R} are true and \mathbf{R} is the correct explanation of \mathbf{A}.
 


Option: 2

Both \mathbf{A}$ and $\mathbf{R} are true but \mathbf{R} is NOT the correct explanation of \mathbf{A}.


Option: 3

\mathbf{A} is true but \mathbf{R} is false.
 


Option: 4

\mathbf{A} is false but \mathbf{R} is true.


Answers (1)

best_answer

Energy of \mathrm{2s} orbital of Hydrogen atom is greater than that of \mathrm{2s} orbital of Lithium.

 \mathrm{\left ( R \right )} Energies of the orbitals in the same subshell decrease with increase in atomic number.

Both \mathrm{A} and \mathrm{R} are correct and \mathrm{R} is the correct explanation of A.

Option (1) is correct.

 

Posted by

Gaurav

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