Q.
The diagram given below explains the qualitative plots of the first ionization ( $IE_{1}$ ), second ionization ( $IE_{2}$ ) and third ionization ( $IE_{3}$ ) energies of respective metals like $Mg,Al$ and $K$ . Select the correct match of $IE$ and the metals.
NTA AbhyasNTA Abhyas 2020
Solution:
The following qualitative plots depict.
$K$ $Mg$ $Al$ $4s^{1}$ $3s^{2}$ $3s^{2}3p^{1}$ Order $\left|\right.E_{1}$ $K < Al < Mg$ Order $\left|\right.E_{2}$ $Mg < Al < K$ Order $\left|\right.E_{3}$ $Al < K < Mg$
| $K$ | $Mg$ | $Al$ |
| $4s^{1}$ | $3s^{2}$ | $3s^{2}3p^{1}$ |
| Order | $\left|\right.E_{1}$ | $K < Al < Mg$ |
| Order | $\left|\right.E_{2}$ | $Mg < Al < K$ |
| Order | $\left|\right.E_{3}$ | $Al < K < Mg$ |