Question

What are the particles which actually determine the mass of an atom​

Answer 1

Answer:

Together, the number of protons and the number of neutrons determine an element's mass number: mass number = protons + neutrons.

Answer 2

Together, the number of protons and the number of neutrons determine an element's mass number:

• mass number = protons + neutrons.

If you want to calculate how many neutrons an atom has, you can simply subtract the number of protons, or atomic number, from the mass number.

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