Identify a 'Chemical twin' among the foo...

Identify a 'Chemical twin' among the foolowings.

A

Zr-Ta

B

Nb-Tc

C

Hf-Re

D

Nb-Ta

Text Solution

Verified by Experts

The correct Answer is:

D

V,Nb and Ta belong to VB group. Nb and Ta has similar chemical properties due to same atomic radii (because of screening effect).

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