The structue of sodium chloride crystal is `:`
A. body`-`centred cubic lattice
B. face`-`centred cubic lattice
C. octahedral
D. square planar
A. body`-`centred cubic lattice
B. face`-`centred cubic lattice
C. octahedral
D. square planar
Correct Answer – b
`NaCl` has `f.c.c.` structure. Thus each unit cell as `4Na^(+)` and `4Cl^(-)` in it. It has `6-6` co`-`ordination no.