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Question: Which one of the following is a ‘d-block element?...

Which one of the following is a ‘d-block element?

A

Gd

B

Hs

C

Es

D

Cs

Answer

Hs

Explanation

Solution

Hs (Z = 108) belongs to 6d series with electronic configuration - [Rn]5f146 d67 s2[ \mathrm { Rn } ] 5 \mathrm { f } ^ { 14 } 6 \mathrm {~d} ^ { 6 } 7 \mathrm {~s} ^ { 2 }