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Chromium isotope 51, not natural occuring, radioactive (halftime 27 d.)

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How are protons and neutrons related?

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Americium has 95 protons and electrons. Number of neutrons: Atomic Mass of an isotope - number of protons


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Atomic mass is composed of the mass of protons, neutrons, and electrons within an atom. Protons and neutrons reside in the nucleus of the atom, while electrons orbit around the nucleus. The sum of the masses of protons and neutrons is the primary contributor to the atomic mass.


What is the atomic mass of a atom?

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