Sum of Protons and Neutrons?

Answer

Atomic mass is the sum of Protons and Neutrons. The sum is based on the number of protons and neutrons located in the nucleus. This sum can vary with different isotopes.
Q&A Related to "Sum of Protons and Neutrons?"
The mass number.
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It's either the mass number or nucleus.
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Total number of protons & neutrons in the nucleus of an atom is the
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1. Write the atomic mass for the atom. Specific isotopes of an element are denoted by their atomic mass. One isotope of carbon, Carbon-12, has an atomic mass of 12 units, meaning
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Isotopes differ from each other because they have different mass. The atomic mass is determined by the sum of the number of protons and neutrons contained in the ...
The atomic mass is the total mass of an atom as defined by the sum of all its subatomic particles. These particles are protons, neutrons, and electrons. ...
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