Which one of the following depicts

Question:

Which one of the following depicts the correct representation of atomic radius (r) of an atom ?

(a) (i) and (ii)

(b) (ii) and (iii)

(c) (iii) and (iv)

(d) (i) and (iv).

Solution:

(b). The atom (ii) has only one shell (K-shell). No electrons are present in the other shells. Therefore, the arrow represents correct atomic radius.

The arrow in atom (iii) also represents the correct atomic radius of the element.

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