Question

Consider the following steps. $A\left(g\right)\underset{E_1}{\overset{}{\to }}{A}^{+}\left(g\right)\underset{E_2}{\overset{}{\to }}{A}^{2+}\left(g\right)\underset{E_3}{\overset{}{\to }}{A}^{3+}\left(g\right)$Third ionization energy of $A\left(g\right)$ is ?

• A. $E_1+E_2$
• B. $E_1+E_2+E_3$
• C. ${(E_1+E_2+E_3)}^{/3}$
• D. $E_3$

Answer 1

The correct option is D $E_3$

$A\underset{E_1}{\overset{}{\to }}{A}^{+}\underset{E_2}{\overset{}{\to }}{A}^{2+}\underset{E_3}{\overset{}{\to }}{A}^{3+}$

Third ionisation energy of A is $E_3$.