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Assertion: the first enthalpy of alumini...

Assertion: the first enthalpy of aluminium is lower than that of magnesium.
Reason: Ionic radius of aluminium cation is smaller than that of magnesium cation.

A

If both assertion and reason are true annd the 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 the reason is false

D

if assertion is false but the reason is true

Text Solution

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The correct Answer is:
B
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