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 du

1.	Indium and thallium of III A group have nearly similar atomic radii due to poor screening effect shown by f-electrons in the
Answer» PENULTIMATE shell of THALLIUM Anti penultimate shell of indium Anti penultimate shell of thallium Penultimate shell of indium Solution :In and TL have nearly similar ATOMIC radii due to poor SCREENING effect shown by f-electrons in the anti penultimate shell of Tl.