proton and neutron
air,mater
Protons and neutrons make up most of the mass of an atom. Electrons weigh almost nothing by comparison.
In Bohr's model, the most mass of the atom is concentrated in the nucleus, which is made up of protons and neutrons. Electrons, which have significantly less mass, orbit around the nucleus in specific energy levels.
The major contribution to the mass of an atom is from protons and neutrons; electrons have a known but negligible mass.
These particles are protons and neutrons.
The two particles that make up most of the mass of a hydrogen-2 atom are the proton and neutron. The proton has a positive charge and is responsible for defining the element, while the neutron has no charge and helps stabilize the nucleus.
The particles are protons, neutrons, and the nucleus inside of the atom Nice helping u >_<
The nucleus, made up of protons and neutrons, contains most of an atom's mass.
In the atom the heaviest particle is the neutron but the proton is close.
protons and neutrons make up most of the mass in an atom
protons and neutrons make up most of the mass in an atom
Protons and neutrons are the particles that account for most of an atom's mass. Electrons, which have much less mass, play a negligible role in the overall mass of an atom.