Adrian knows that a certain chemical is made up of particles that have two different types of atoms. These atoms differ in the number of protons that they have. What kind of chemical must it be?

An element's atomic number is equal to the number of protons in the nuclei of any of its atoms. The mass number of an atom is the sum of the protons and neutrons in the atom. Isotopes are atoms of the same element (same number of protons) that have different numbers of neutrons in their atomic nuclei

Explanation:

id need more of an explanation

the answer is title i subtitle b