Periodic Table and Periodicity

If an element with $Z=120$ is discovered, then which group of elements will it belong to?

\(\text { The first to fifth ionization energies (IE) of two p-block elements } X \text { and } Y \text { are given below. }\)
$$ \begin{array}{|c|c|c|c|c|c|} \hline & \mathrm{IE}_1(\mathrm{eV}) & \mathrm{IE}_2(\mathrm{eV}) & \mathrm{IE}_...

Which among the following is NOT correct regarding the first ionization potential $\left(\mathrm{IP}_1\right)$ of period $I I I$ elements $M g, A l, S i, P$ and $S$ ?