The radii (metallic) of `Fe,CO and Ni` are nearly same.
This is due to:

The atomic size of Fe, Co and Ni are nearly same. Explain with reason.

The atmoic radii of palladium and platinum are nearly same. Why?

The atomic sizes of "_26Fe_(27)Co and "28Ni are nearly same. Explain with a reason.

Fe, Co, Ni, Al

Indium and thallium of III A group have nearly similar atomic radii due to poor screening effect shown by f-electrons in the

Indium and thallium of III A group have nearly similar atomic radii due to poor screening effect shown by f-electrons in the