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Assertion : Alkali metals have least val...

Assertion : Alkali metals have least value of ionization energy within a period.
Reason : They precede alkaline earth metals in periodic table.

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 assertion is false but reason is true.

Text Solution

Verified by Experts

The correct Answer is:
b
Both are correct. The lower ionisation energy of alkali metals is due to their small size.
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