We are asked to determine the number of neutrons of Krypton-84 with an atomic number of 36.
Recall that for a neutral atom, the atomic number is the number of protons and the number of protons equals the number of electrons.
Atomic Number = # protons = # electrons
We are given with the atomic number (36) which means that we have 36 protons and 36 electrons.
The mass number of common krypton is 84, and its atomic number is 36. Krypton-84 has how many neutrons within each isotope?
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