Use the statements about ionic formulas to answer the question.
1. Substances with the same crystal lattice structure will have the same ionic formula.
2. An ionic formula shows a simple ratio of number of cations to number of anions.
3. The net charge of a formula unit in an ionic formula always equals zero.
4. In an ionic formula, the cation is always written first.
The true statements are
Select one:
a. 1, 2, and 3
b. 1, 2, and 4
c. 1, 3, and 4
d. 2, 3, and 4
