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What will you do if you want to know the number of neutrons in an atom of a given element?

a. add the mass number and the atomic number.

b. round the atomic weight to the nearest whole number.

c. add the mass number and the atomic number, then divide by 2

d. subtract the atomic number from the mass number.

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Answer:

The number of electrons in a neutral atom is equal to the number of protons. The mass number of the atom (M) is equal to the sum of the number of protons and neutrons in the nucleus. The number of neutrons is equal to the difference between the mass number of the atom (M) and the atomic number (Z).

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