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Q.

Assertion (A) : Atomic radius of Galium is less than Aluminium.
Reason (R) : Poor screening effect of 4d electrons increases effective nuclear charge in Ga.

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a

A is incorrect and R is correct

b

Both A and R are correct and R is correct explanation of A

c

A is correct and R is incorrect

d

Both A and R are correct but R is not correct explanation of A

answer is C.

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Detailed Solution

NCERT XI Part-2 317

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