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  • Assign the position of the element having outer electronic configuration (n-2) f raised to 7 (n-1) d raised to 1 ns raised to 2 for n=6, in the periodic table.

3.30    Assign the position of the element having outer electronic configuration   

(iii)     ( n-2 ) f^ 7 ( n-1 ) d^ 1 ns^2 \: \: for\: \: n = 6 , in the periodic table.

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Given the outer electronic configuration of the element: 

( n-2 ) f^ 7 ( n-1 ) d^ 1 ns^2 \: \: for\: \: n = 6.

For n=6 hence the element belongs to the sixth period and the last electron goes to the f-orbital, the element is from f-block.

We have the group number =3. Electronic configuration: [X_{e}]4f^75d^16s^2.

Hence the element is Gadolinium with Z=64.

 

Posted by

Divya Prakash Singh

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