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Q.

Statement-I: Sc (Z = 21) is placed as d-block element.

 Statement-2: Last filling electron goes into 3d-subshell.

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a

Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.

 

b

Statement-1 is True, Statement-2 is False.

c

Statement-1 is False, Statement-2 is True.

d

Statement-1 is True, Statement-2 is True, Statement-2 is NOT a correct explanation for Statement-1.

answer is A.

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Detailed Solution

Sc (Z=21) is positioned in the d-block elements when the final filling electron enters the third sub-orbit(3d). Option 1 is right as a result.

[Ar]3d14s2

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