Question

Which of the following indicates the correct order of variation in atomic size

(a) Be < C < F < Ne
(b) Be >C > F > Ne
(c) Be > C >Ne> F
(d) F < Ne > Be < C ​

Answer 1

Correct answer is Option b✔️✔️✔️

The decreasing order of these elements are as follows:

The decreasing order of these elements are as follows:Be: 1.4 A°

The decreasing order of these elements are as follows:Be: 1.4 A°C: 0.91 A°

The decreasing order of these elements are as follows:Be: 1.4 A°C: 0.91 A°F: 0.57 A°

The decreasing order of these elements are as follows:Be: 1.4 A°C: 0.91 A°F: 0.57 A°Ne: 0.51 A°

The decreasing order of these elements are as follows:Be: 1.4 A°C: 0.91 A°F: 0.57 A°Ne: 0.51 A°These elements belong to same period in the periodic table

The decreasing order of these elements are as follows:Be: 1.4 A°C: 0.91 A°F: 0.57 A°Ne: 0.51 A°These elements belong to same period in the periodic tableThe simple logic that follows is, as we go from left to right of a period, elements are arranged in manner of increasing order of their atomic number. The number of shells remaining constant in a period, the nuclear force increases and the valence electrons are attracted more inwardly. Hence there is a decrease in atomic size of the elements in same period.

Answer 2

Answer:

answer is option B Be>C>F>Ne