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Electrons has very little mass compared with the?
Compared with an atom. Protons and neutrons make up the nucleus of an atom with electrons in energy levels round the outside. If a proton has a mass of 1, then a neutron has a mass of very nearly the same (1) but an electron has a mass of 1/1836 or nearly two thousandth the mass of a proton.
The mass number of an atom is equal to what?
proton
What is the mass number of atom equal to?
proton
How much do neutrons contribute to the total mass of an atom?
The exact contribution varies from atom to atom, since different atoms have different numbers of neutrons. However, in a simple system of one proton, one electron, and one neutron (called a deuterium atom), the neutron contributes roughly as much as the proton does, since its mass is almost (but not quite; the neutron is heavier) equal to that of the proton. To be precise, as listed at http://www.newton.dep.anl.gov/askasci/gen01/gen01078.htm, Mass of proton : 1,6726 x 10^(-27) kg Mass of neutron: 1,6749 x 10^(-27) kg Mass of electron: 0,00091x10^(-27) kg
What represents the sum of proton in the nucleus of an atom?
mass number
What is the mass of an atom found by?
Mass of an atom = Mass of proton + Mass of neutron
Subatomic particle that contributes mass and a positive electrical charge to an atom?
The sub atomic particles to an atom are the proton (p), neutron (n). The p and n both contribute to atomic mass. The positive charge comes from the p and outside the atom in orbit is/are the electron with negligible mass, but negative charge.
How do you determine the atom the atomic mass of an atom?
Proton + Nuetron = Atomic Mass
Electrons has very little mass compared with the?
Compared with an atom. Protons and neutrons make up the nucleus of an atom with electrons in energy levels round the outside. If a proton has a mass of 1, then a neutron has a mass of very nearly the same (1) but an electron has a mass of 1/1836 or nearly two thousandth the mass of a proton.
What is the mass of a proton in an atom?
1.007316 (amu)
The mass number of an atom is equal to what?
proton
What is the mass number of atom equal to?
proton
Why are protons and neutrons considered when the mass of an atom but electrons are not?
Electrons have mass that is approximately 1863 times smaller than that of proton, so usually when calculating the mass of atoms, the mass of the electrons is simply not massive enough to make a significant difference to the overall mass of the atom.
Where is most of the mass of an atom contain?
in the nucleus of an atom -proton and neutrons , electrons in the orbit has the negligible mass.
How much do neutrons contribute to the total mass of an atom?
The exact contribution varies from atom to atom, since different atoms have different numbers of neutrons. However, in a simple system of one proton, one electron, and one neutron (called a deuterium atom), the neutron contributes roughly as much as the proton does, since its mass is almost (but not quite; the neutron is heavier) equal to that of the proton. To be precise, as listed at http://www.newton.dep.anl.gov/askasci/gen01/gen01078.htm, Mass of proton : 1,6726 x 10^(-27) kg Mass of neutron: 1,6749 x 10^(-27) kg Mass of electron: 0,00091x10^(-27) kg
Does the proton affect the mass of an atom?
Yes, significantly so. One proton is approximately one atomic mass unit.
A postively charged particle in an atom?
The positively charged particle in an atom is the proton. The negatively charged particle is the electron. The electrically neutral particle is the neutron.
