Electronic configuration of four elements A, B ,C and D are given below
A) `1s^(2), 2s^(2), 2p^(6)`
B) `1s^(2), 2s^(2), 2p^(4)`
C) `1s^(2), 2s^(2), 2p^(6), 3s^(1)`
D) `1s^(2), 2s^(2), 2p^(5)`
Which of the following is the correct order of increasing tendency to gain electron?

Options

A. `A lt C lt B lt D`
B. `A lt B lt C lt D`
C. `D lt B lt C lt A`
D. `D lt A lt B lt C`

Answer

A

Explanation

Across the period electron gain tendency increases.