Question

The formula of a compound represents the:

• A. atomicity of the compound
• B. charge on cations and anions
• C. solubility in water
• D. melting point

Answer 1

Answer: (A), (B)

The correct options are
A atomicity of the compound
B charge on cations and anions

A chemical formula identifies each constituent element by its chemical symbol and indicates the proportionate number of atoms of each element. In empirical formulas, these proportions begin with a key element and then assign numbers of atoms of the other elements in the compound, as ratios to the key element. It also indicates the charge on cations and anions present in the molecule. It also identifies charges on both positive and negative ions.

For example: Sodium ($Na$), sodium ion ($N{a}^{+}$)