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 $\underline{\hspace{2cm}}$ BM (Near integer). (Given atomic numbers : $$\mathrm{Ti}: 22, \mathrm{~V}: 23, \mathrm{Cr}: 24, \mathrm{Co}: 27$$)