The spin only magnetic moment value of the most basic oxide of vanadium among $V_2{O}_3,V_2{O}_4$ and $V_2{O}_5$  is _____B.M (Nearest integer) 

Less is oxidation state of metal atom more is basic nature $V_2{O}_3\left(V^{+3}\right)$ is most basic oxide among the following E.C  $V^{3+}$ of  is  ${\left[Ar\right]}^{18}3d^2$
Total no. Of unpaired electrons in  $V+3isn=2$
$\mu =\sqrt{n(n+2)}or\sqrt{8}=2.87BM=3$