With which of the following configurations the lowest value of first IE is associated?

Question

With which of the following configurations the lowest value of first IE is associated? (A)  1s2 2s2 2p6 3s1 (B) 1s2 2s2 2p5 (C) 1s2 2s2 2p6  (D)  1s2 2s2 2p6 3s2 3p2

Tardigrade Admin · Accepted Answer

3s-electron is weak due to larger size and after removal of it, atom will a will acquire noble gas configuration

Q. With which of the following configurations the lowest value of first IE is associated?

$1 s^{2} 2 s^{2} 2 p^{6} 3 s^{1}$

$1 s^{2} 2 s^{2} 2 p^{5}$

$1 s^{2} 2 s^{2} 2 p^{6}$

$1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{2}$

$3 s$ -electron is weak due to larger size and after removal of it, atom will a will acquire noble gas configuration

Q. With which of the following configurations the lowest value of first IE is associated?

1s22s22p63s1

1s22s22p5

1s22s22p6