An atom of a certain element has 36 protons, 36 electrons, and a mass number of 84, At room temperature this element is a very stable gas. How many neutrons are in this atom?

48

Explanation:

Atomic number is equal to how much electrons there is (the number of protons is equal to the number of electrons)

To find the number of neutrons, one have to subtract the atomic number from the atomic mass.

i.e: 84-36=48

just here for the other one bc they put up with u

b - the respond is innate and varies over time.

good luck!