It is stated that ZnS does not crystallise in the NaCl structure. It is due to

Options

A. The `(r_(+))/(r_(-))` ratio is 0.402, too low to avoid anion- anion contact in the NaCl structure
B. ZnS is water insoluble, NaCl is water soluble
C. ZnS is water soluble, NaCl is water insoluble
D. Zn belongs to d-block, Na belongs to s-block

Answer

A

Explanation

Because to have C.N. .6. and NaCl type structure radius ratio should be `0.414((r_(c ))/(r_(a)))`