An atom with 3 protons, 4 neutrons, and 3 electrons has what atomic mass?

An atom with 3 protons, 4 neutrons, and 3 electrons has what atomic mass?

• A. 4
• B. 7
• C. 3
• D. 10

Answer: (B)

The atomic mass of an atom is calculated by adding the number of protons and neutrons in its nucleus. Protons and neutrons each have a mass of approximately 1 atomic mass unit (amu), while electrons have a negligible mass in comparison. In this case, the atom has 3 protons and 4 neutrons. By adding these together, you find: - 3 protons + 4 neutrons = 7 atomic mass units. Electrons do not contribute significantly to the atomic mass, so they are not included in this calculation. Therefore, the atomic mass of the atom, based on the given data, is 7.

The atomic mass of an atom is calculated by adding the number of protons and neutrons in its nucleus. Protons and neutrons each have a mass of approximately 1 atomic mass unit (amu), while electrons have a negligible mass in comparison.

In this case, the atom has 3 protons and 4 neutrons. By adding these together, you find:

• 3 protons + 4 neutrons = 7 atomic mass units.

Electrons do not contribute significantly to the atomic mass, so they are not included in this calculation. Therefore, the atomic mass of the atom, based on the given data, is 7.