Magnetic moment, ionic conductance and colligative properties are useful in deciding structure/constitution of a given unknown complex compound.
Q. A metal M having elecftronic configuration `(n-1)d^(8)ns^(2)` forms complexes with co-ordination No.=4 and 6, if it forms diamagnetic complexes then permissible oxidation states of metal cation and geometry is:

Options

A. `+2`, octahedral
B. `+4`, octahedral
C. `+2`, square planar
D. (b) and (c) both

Answer

D