Chemistry - Complete d-block Question with Solution | TestHub

A first row transition metal with highest enthalpy of atomisation, upon reaction with oxygen at high temperature forms oxides of formula ${\mathrm{M}}_2{\mathrm{O}}_{\mathrm{n}}$ (where $\mathrm{n}=3,4$, 5). The 'spin-only' magnetic moment value of the amphoteric oxide from the above oxides is ______ $\mathrm{BM}$ (near integer) (Given atomic number: $\mathrm{Sc}:21,\mathrm{Ti}:22,\mathrm{V}:23,\mathrm{Cr}:24,\mathrm{Mn}:25,\mathrm{Fe}:26,\mathrm{Co}:27$, $\mathrm{Ni}:28,\mathrm{Cu}:29,\mathrm{Zn}:30$)