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Suppose you have an atom composed of 19 protons, 20 neutrons and 19 electrons. what is the mass of this atom?

Suppose you have an atom composed of 19 protons, 20 neutrons and 19 electrons. what is the mass of this atom?
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Suppose you have an atom composed of 19 protons, 20 neutrons and 19 electrons. what is the mass of this atom?

User Eugene Botyanovsky
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1 Answer

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Mass = PROTONS + neutrons. So, 19 +20 = 39.
(Don't confuse yourself between electrons and protons when they are equal because it could be an ion)
User Ignorant
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