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Subatomic particles are measured in amu's--Atomic Mass units. Protons and neutrons are both approximately 1 amu, and electrons have a mass so much less as to be negligible (about 1/2000 that of a proton).
Wiki User
∙ 14y ago
Wiki User
∙ 9y agoThe three major particles comprising the atom are the proton (p), neutron (n) and electron (e-). The mass of the proton and neutron are roughly equal of 1 atomic mas unit. For the most part the electron is so infinitesimally small for its mass to be negligible
Wiki User
∙ 12y agomp = mass proton = 1.67262 * 10-27 kg = 1.007276a.m.u.
me = mass electron = 9.10939 * 10-31 kg = 0.00054858 a.m.u. = [1/1836]*mp
mn = mass neutron = 1.67493 * 10-27 kg = 1.008665 a.m.u.
Wiki User
∙ 11y agoIf you count the nucleons (the protons and neutrons) you will get the mass (electrons have a negligible contribution to the mass) and can compare it. A hydrogen atom with one proton has one quarter the weight of a helium atom that has two protons and two neutrons.
Wiki User
∙ 9y agoIn the atom:
Neutron:
Mass: 1,00866491600(43) amu.
Electron:
Mass: 5,4857990946(22)×10−4 amu.
Proton:
Mass: 1,007276466812(90) amu.
Wiki User
∙ 12y agothe mass of a proton is greater than the mass of an electron
Wiki User
∙ 9y agoProtons (+) and neutrons (neutral) are close in size, and electrons (-) are 1/1836 of that size.
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What are the weights of the subatomic particles?
I think you probably mean the mass of the classical subatomic particles, Proton, Neutron and Electron. From memory, the mass of the proton and neutron are almost the same and approximately 1.6 x 10-24 grams while the mass of an electron is about 0.9 x 10-28 grams. In the Standard Model of subatomic particles, there are very many more particles than these three and their masses are best looked up in tables. Some of the masses of subatomic particles have not yet been determined (neutrinos) and one of the theoretical particles has not yet been shown to exist at this time (Higgs boson).
What galactic formation is made of irregular masses of particles gases and plasmas that reflect light from nearby stars?
nebulae
What sub-atomic particles have a mass of 1 amu?
neutrons and protonsbut NOT electrons (the almost have no mass)
Why are some objects more dense than other objects?
Some objects are more dense than others due either to the mass of the particles in the material, the atomic number or how closely the particles are packed together. For example, lead, has a high density because its particles have a very high mass. But a material like polystyrene, doesn't have a high density as the particles are spaced far apart and they have a low mass value.
Why was the neutron the last subatomic particle to be discovered?
no electric charge. the nuclear theory at the time explained the atomic masses by assuming the nucleus contained a number of protons equal to the atomic mass number and enough electrons to cancel the charge beyond that of the atomic number of the element.
How do you spell particles?
That is the correct spelling of the plural noun "particles" (dust, or subatomic masses).
What statement best compares the masses of the two samples?
The masses cannot be compared without a balance.
What is the subatomic particles mass of 1amu?
The neutron and the proton have masses close to 1 amu.
Subatomic particles are closest in mass?
Proton and neutron (components of the atomic nucleus) have masses very close.
How can the subatomic particles be distinguished?
They have different masses, electrical charge, dimensions, life time, spin etc.
Weight of subatomic particles is measured by?
These masses cannot be measured directly; they are derived by calculation from other physical data.
How do you compare and contrast subatomic particles?
They have different masses, electrical charge, dimensions, life time, spin etc.
What are the weights of the subatomic particles?
I think you probably mean the mass of the classical subatomic particles, Proton, Neutron and Electron. From memory, the mass of the proton and neutron are almost the same and approximately 1.6 x 10-24 grams while the mass of an electron is about 0.9 x 10-28 grams. In the Standard Model of subatomic particles, there are very many more particles than these three and their masses are best looked up in tables. Some of the masses of subatomic particles have not yet been determined (neutrinos) and one of the theoretical particles has not yet been shown to exist at this time (Higgs boson).
What is the sum of the masses of the positively charged subatomic particles are called what?
You think probably to mass number; the mass number is the sum of protons and neutrons.
In subatomic particles do protons and neutrons have the same mass?
The masses of protons and neutrons are very close, but not the same. A proton is about 1.001378 times more massive than a neutron.
Which two particles in the atom have the same mass?
No two subatomic particles have the exact same mass. The proton and the neutron, however, come close. Neutrons are heavier than protons by only 2.3 X 10-30 kg.
What are the three major subatomic particles' masses?
Neutron:Mass: 1,00866491600(43) amu.Charge: neutralElectron:Mass: 5,4857990946(22)×10−4 amu.Charge: negativeProton:Mass: 1,007276466812(90) amu.Charge: positive
