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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 numbers 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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Knowledge Check

  • Assertion : The energy of an electron is largely determined by its principal quantum number. Reason : The principal quantum number is a measure of the most probable distance of finding the electrons around the nucleus.

    A
    If both Assertion & Reason are true and the reason is the correct explanation of the assertion.
    B
    If both Assertion & Reason are true but the reason is not the correct explanation of the assertion.
    C
    If Assertion is true statement but Reason is false.
    D
    If both Assertion and Reason are false statements.

  • Assertion : The energy of an electron is largely determined by its principal quantum number. Reason : The principal quantum numbe (n) is a measure of the most probable distance of finding the electron around the nucleus.

    A
    If both assertion and reason are true and reason is the correct explanation of assertion.
    B
    If both assertion and reason are true but reason is not the correct explanation of assertion.
    C
    If assertion is true but reason is false.
    D
    If both assertion and reason are false.

  • Assertion. The energy of an electron is largely determined by its principal quantum number Reason. The principal quantum number (n) is a measure of the most probable distance of finding the electron around the nucleus.

    A
    If both assertion and reason are true, and reason is the true explanation of the arrertion
    B
    If both assertion and reason are true, but reason is not the true explanation of the assertional
    C
    If assertion is true, but reason is false
    D
    If both assertion and reason are false

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