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Question

Chemistry Question on Classification

The group of elements in which the differentiating electrons enters in the antipenultimate shell of atoms are called

A

f−f- block elements

B

p−p- block elements

C

s−s- block elements

D

d−d- block elements

Answer

f−f- block elements

Explanation

Solution

The group of elements in which the differentiating electrons enters in the antipenultimate (inner to the penultimate shell, ie, n−2n-2 ) shell are called f−f- block elements or inner-transition elements.