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Assertion: Boron has a smaller first ion...

Assertion: Boron has a smaller first ionisation enthalpy than beryllium.
Reason: The penetration of a `2s` electron to the nucleus is more than the `2p` electron, hence `2p` electorn is more shielded by the inner core of electrons than the 2s electrons.

A

Assertion and reason both are correct statement but reason is not correct explanation for assertion

B

Assertion is correct statement but reason is wrong statement.

C

Assertion and reason both are correct statement and reason is correct explanation for assertion

D

Assertion is reason both are wrong statements.

Text Solution

Verified by Experts

The correct Answer is:
C
NA
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