How do you find number of neutrons?

The number of electrons is equal to the number of protons. If you subtract the number of protons from the mass number, you can find the number of neutrons.

How did you determine the number of protons and the number of neutrons?

If the atom is neutral, the number of electrons will be equal to the number of protons.

How do you find number of protons?

How do you find number of electrons?

The number of electrons in an atom is the same as the atomic number of an element. The number of electrons in oxygen is 8.

How do you find the number of neutrons in an isotope?

The atomic number of the element is the number of protons.

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