A) Os
B) Zr
C) Pt
D) Ru
Correct Answer: B
Solution :
Transition elements may be defined as elements whose atoms or simple ions contain partially filled d-orbitals. This definition does not cover zinc, cadmium and mercury as they have completely filled d-orbital consequently they do not exhibit characteristic properties of transition elements Zr = 40, Os = 76, Pt = 78, Ru = 44 (Least at. no.)You need to login to perform this action.
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