Correct statement about an element having electronic configuration $1{\mathrm{s}}^{2}2{\mathrm{s}}^{2}2{\mathrm{p}}^{6}3{\mathrm{s}}^{2}3{\mathrm{p}}^{6}3{\mathrm{d}}^{5}4{\mathrm{s}}^2$ is 
 

Its highest oxidation state is +7 in its compounds 

It belongs to 3^rd period of modern periodic table

It belongs to s-block

It is a non metal