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Atomic Radii and Ionization Energy (Group 1)

Question 23 W...

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Question 23
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)

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Solution

Option (b) is correct.
The existence of a shell is valid only when it is occupied by electrons. The atomic radius of a chemical element is a measure of the size of its atoms, usually the mean or typical distance from the nucleus to the boundary of the outermost cloud of electrons. Hence only option ii and iii are correct.

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Atomic Radii and Ionization Energy (Group 1)

Standard IX Chemistry

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