Question

multiple-choice question you can find out how many neutrons are in an atom by subtracting the number of protons from the atomic mass of the atom adding the number of protons and electrons subtracting the number of electrons from protons rewatch

Explanation:

To find the number of neutrons in an atom, we use the formula: Number of neutrons = Atomic mass (rounded to nearest whole number) - Atomic number (number of protons). The first option says "subtracting the number of protons from the atomic mass of the atom", which matches this formula. The second option (adding protons and electrons) is incorrect as electrons' number relates to charge, not neutrons. The third option (subtracting electrons from protons) is also incorrect as it doesn't relate to neutrons.

Answer:

A. subtracting the number of protons from the atomic mass of the atom