Question

what two parts of the atom have an atomic mass of approximately 1 amu (atomic mass unit)? a protons and electrons b protons and neutrons c electrons and neutrons d protons, electrons and neutrons

Explanation:

Protons and neutrons are found in the nucleus of an atom and each has an approximate mass of 1 atomic mass unit (amu). Electrons have a much smaller mass, about 1/1836 amu.

Answer:

B. protons and neutrons