What statements correctly describe the crystal structure of halite?

The unit cell consists of eight ions: four are Na+ ions and the other four are Cl– ions.
The crystal structure is face-centered cubic (FCC).
The sodium ions occupy the lattice points.
The crystal structure is body-centred cubic (BCC).
Each ion in this lattice has six of the other kind of ion as its nearest neighbors.

The unit cell consists of eight ions: four are Na+ ions and the other four are Cl– ions.

This is true because NaCl is a one to one ratio and each have 4 ions

The crystal structure is face-centered cubic (FCC).

This statement is also true

The sodium ions occupy the lattice points.

This is not true. Anions occupy lattice points. So the Cl- ions occupy the lattice points.

The crystal structure is body-centred cubic (BCC).

Each ion in this lattice has six of the other kind of ion as its nearest neighbors.

Both of these statements are false

answer: the figure is attached herewith.

step-by-step explanation:   we are given to sketch a unit circle and label the terminal points corresponding to

in the attached figure, we have drawn a unit circle, with centre at o(0,0) and radius 1 unit. we have labelled the points a, b, c, d and e corresponding to the angles below

∠aox = 60°,

∠box = 120°,

∠cox = 180°,

∠dox = 240°,

∠eox = 300°.

and the coordinates are a(0.5,1), b(-0.5,1), c(-1,0), d(-0.5,-1) and e(0.5,-1).

thus, the answer is complete.

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