Which one of the following has the lowest ionization energy?

Question

Which one of the following has the lowest ionization energy? (A) 1s2 2s22p6 (B) 1s22s22p63s1 (C) 1s2 2s22p5 (D) 1s22s22p3

Tardigrade Admin · Accepted Answer

In the Periodic Table, the minimum ionisation energy is found at alkali metals. Hence sodium (electronic configuration

= 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{1})

has the lowest ionisation energy.
Note : - Ionisation energy is the amount of energy required to remove an electron from the outermost shell an isolated atom.

Q. Which one of the following has the lowest ionization energy?

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

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

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

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

Q. Which one of the following has the lowest ionization energy?

1s22s22p6

1s22s22p63s1

1s22s22p5

1s22s22p3

In the Periodic Table, the minimum ionisation energy is found at alkali metals. Hence sodium (electronic configuration =1s22s22p63s1) has the lowest ionisation energy. Note : - Ionisation energy is the amount of energy required to remove an electron from the outermost shell an isolated atom.

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

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

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

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