Q57. The spin-only magnetic moment value of the ion among $\mathrm { Ti } ^ { 2 + } , \mathrm { V } ^ { 2 + } , \mathrm { Co } ^ { 3 + }$ and $\mathrm { Cr } ^ { 2 + }$, that acts as strong oxidising agent in aqueous solution is $\_\_\_\_$ BM (Near integer). (Given atomic numbers :\\
$\mathrm { Ti } : 22 , \mathrm {~V} : 23 , \mathrm { Cr } : 24 , \mathrm { Co } : 27$ )\\