Atomic Structure Flashcards

All 4 cards in this deck

Where in the atom are protons, neutrons and electrons found?

Protons and neutrons are in the nucleus; electrons orbit the nucleus in shells.

What are the relative charges of a proton, a neutron and an electron?

Proton $+1$, neutron $0$, electron $-1$.

What are the relative masses of a proton, a neutron and an electron?

Proton $1$, neutron $1$, electron about $\frac{1}{1836}$ (negligible).

True or false? Almost all of the mass of an atom is in its nucleus.

True. Protons and neutrons are in the nucleus and electrons have negligible mass.