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The number of protons
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What particles make up most of the mass atom?
air,mater
What are the two parts of the atom that have a mass of 1 atomic mass unit?
The two parts of the atom that have a mass of approximately 1 atomic mass unit (amu) are protons and neutrons. Protons are positively charged particles found in the nucleus of an atom, while neutrons are neutral particles that also reside in the nucleus. Together, these particles make up the majority of an atom's mass. Electrons, on the other hand, have a negligible mass compared to protons and neutrons.
The part of the atom that is small and dense is?
The nucleus is the small and dense center of an atom. It contains protons and neutrons, which are the subatomic particles that make up the majority of the atom's mass.
What are the 2 particles that make up the nucleus of an atom?
Protons and neutrons compose the nucleus of an atom. Most of the mass of an atom exists in the nucleus. Other smaller sub atomic particles such as quarks exist, but are usually not addressed until advanced physics or chemistry classes.
What particles make up the atomic mass number of an element?
The atomic mass number of an element is determined by mass of the nucleus of an atom. Therefore the particles that make up the nucleus determine the mass number. These particles are protons and neutrons.The mass of the protons and neutrons do not vary between elements, but the number of each in the nucleus varies between elements and between isotopes of the same element.
What particles make up most of the mass atom?
air,mater
Of the three particles that make up an atom which is the lightest?
The electron is the lightest of the three particles that make up an atom, with a mass of approximately 9.11 x 10^-31 kilograms.
What particles take up most of the mass of an atom?
Protons and neutrons make up most of the mass of an atom. Electrons weigh almost nothing by comparison.
In Bohr's model which particles make up the most mass of the atom?
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.
Which two particles make up most of the mass of a C-12 atom?
proton and neutron
Which subatomic particles makes up most of the mass off the atom?
The major contribution to the mass of an atom is from protons and neutrons; electrons have a known but negligible mass.
The part of the atom that is small and dense is?
The nucleus is the small and dense center of an atom. It contains protons and neutrons, which are the subatomic particles that make up the majority of the atom's mass.
Which two particles make up most of the mass of a hydrogen-2 atom?
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.
What particles in the nucleus of the atom?
The particles in the nucleus of an atom are the protonsand the neutrons. We call particles that make up the atomic nucleus nucleons, and this word is just a way to say "the particles that make up an atom's nucleus" in an abbreviated manner.
What sub atomic particles makes up mass of an atom?
Protons and neutrons
What makes up most of the mass of an atom?
protons and neutrons make up most of the mass in an atom
What makes up most of the mass of Atom?
protons and neutrons make up most of the mass in an atom
