The atomic number is the number of in an atom
Protons
Neutrons
Electrons
Thing
Protons + Neutrons

Protons

Explanation:

Atomic numbers are a count of the number of protons in an atom. Atoms can have varying numbers of electrons and neutrons, but the number of protons will always stay the same, otherwise, the atom would become a different element.

For example, oxygen has 8 protons, so its atomic number is 8. If oxygen gained a proton, it would become Fluorine. The number of protons is always equal to the atomic number.

it means

miss jennifer is buying pencils in packs of 12, notebooks in packs of 16, and red pens in boxes of 20. she needs to have the same number of pencils, notebooks, and red pens. how many packs of each type should she buy?

answer mine : )

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