RRB Paramedical Staff Nurse Model Paper 5

The maximum oxidation state shown by a p-block element is equal to the total number of valence electrons (i.e., the sum of the s and p-electrons).
$\mathit{P}:\left[\mathit{N}\mathit{e}\right]3{\mathit{s}}^{2}3{\mathit{p}}^3$ . Total valence electrons =5 so it will show +5 oxidation state. The stability of +5 oxidation state decreases down the group due to inert pair effect.