Question

Sodium chloride (NaCI) is made from _____ of sodium (Na) and ___ of chlorine ( Ci)

one atom or two atom? ( one or two for each)

Answer 1

one atom of sodium and one atom of chlorine is needed to produce sodium chloride NaCl
Na+ + Cl- ----------> NaCl
both the atoms combine in 1:1 ratio to form NaCl
this compound is an ionic compound.

Answer 2

Sodium chloride is made from one sodium atom and one chlorine atom:

Sodium has a charge of +1, or just +.

Chlorine has a charge of -1, or just -.

These balance out.