Question

label the parts of an atom on the diagram below.
1.
2.
3.

Explanation:

1. The part labeled 1 (with the + sign) is a proton, which is a positively charged particle in the nucleus of an atom.
2. The part labeled 2 (the unmarked circle in the nucleus, neutral) is a neutron, which has no charge and is also in the nucleus.
3. The part labeled 3 (the - sign particles orbiting the nucleus) are electrons, which are negatively charged particles that orbit the nucleus in electron shells.

Answer:

1. Proton
2. Neutron
3. Electron