Question

in a chemical formula, which of the following indicates how many of each atom or ion is present?
a. atomic number
b. subscript
c. formula mass
d. the charge

Explanation:

In a chemical formula, subscripts are used to show the number of each atom or ion present. The atomic number identifies an element, formula mass is the sum of atomic masses in a formula, and the charge indicates the electrical state.

Answer:

B. subscript