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Assertion (A) : In the mordern periodic ...

Assertion (A) : In the mordern periodic table period indicates the value of azimuthal quantum number.
Reason (R ): Each period begins with the filling of new shell.

A

If both Assertion (A) and (R ) are correct and Reason (R ) is the correct explanation of Assertion (A).

B

If both (A) and (R ) are correct but (R ) is not the correct explanation for (A).

C

If (A) is correct but (R ) is not correct.

D

If (A) and (R ) are correct

Text Solution

Verified by Experts

The correct Answer is:
D
Correct assertion: In the modern periodic table the period indicates the value of principal quantum number.
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