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Assertion : The energy of an electron is...

Assertion : The energy of an electron is mainly determined by principal quantum number.
Reason : The principal quantum number is the measure of the most probable distance of finding the electron around the nucleus.

A

If both assertion and reason are true and the reason is the correct explanation of the assertion.

B

If both assertion and reason are true but reason is not the correct explanation of the assertion.

C

If assertion is true but reason is false.

D

If the assertion and reason both are false.

Text Solution

Verified by Experts

The correct Answer is:
A
We know that principal quantum number represent the main energy level or energy shell. Since each energy level is associated with a definite amount of energy, this quantum number determines to a large extent energy of an electron. It also determines the average distance of an electron around the nucleus. Therefore, both Assertion and Reason are true and the Reason is a correct explanation of the Assertion.
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