Question

continued)organize the information on atomic mass to complete the outline.atomic massa. nucleus of atom1. 2. 3.

Explanation:

The nucleus of an atom contains the subatomic particles that contribute nearly all of an atom's mass. The key components are protons, neutrons, and the fact that their combined mass equals the atomic mass.

1. Protons: Positively charged particles with a mass of approximately 1 atomic mass unit (amu), located in the nucleus.
2. Neutrons: Neutral particles with a mass of approximately 1 atomic mass unit (amu), located in the nucleus.
3. Combined proton/neutron mass: The total mass of protons and neutrons in the nucleus makes up almost the entire atomic mass of an atom, as electrons have negligible mass.

Answer:

1. Protons (positively charged, ~1 amu mass)
2. Neutrons (neutral, ~1 amu mass)
3. Total nuclear mass = sum of protons + neutrons (accounts for nearly all atomic mass)