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Assertion: Shielding effect increases as...

Assertion: Shielding effect increases as we go down the group.
Reason: More is the number of electrons in the penultimate shell, more is shielding.

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 a 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
Both assertion and reason are true and reason is the correct explanation of assertion.
The phenomenon in which the Penultimate Shell (n-1) electrons act as screen or shield in between nucleus and valence shell electrons thereby reducing the effective nuclear charge is known as shielding effect.
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