The basic character of the transition metal monoxides follows the order: (Atomic nos. Ti =22, ~V =23, Cr =24, Fe =26 )

Step-by-step solution

As we move from left side to right side in the first transition series atomic number of elements increases and no. of electrons also increases. Size of elements on moving left to right decreases because effective nuclear charge of nucleus on the outermost shell electron increases. It means electronegativity of atoms increases from left to right, then the power of donation of electrons decreases which means the basicity of that element decreases. Caution Students get confused on the order of size of elements in the