Question

Atomic mass of an element is equal to the sum of

• A. Proton and neutron
• B. Electron and proton
• C. Electron and neutron
• D. None of the above

Answer 1

Answer:

A. Proton and neutron

• The atomic mass of an element is equal to the sum of the number of protons and neutrons in an atom

• The atomic number of an atom is equal to the number of protons in its nucleus.