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The mass of an electron is regarded as zero when it is at rest. The mass of an electron or any particle is calculated by using its momentum and its energy. The mass of an electron is related to its momentum which is zero when the electron is not moving. So when the electron is at rest its momentum is zero and thus its mass is zero.
When an electron is moving its mass is no longer zero as its momentum is not zero. It is calculated by using the following equation:
- Mass = Energy / (Speed of Light)2
The mass of an electron increases as its energy increases and it increases even more when it is moving at a higher speed. So when the electron is at rest and its momentum is zero its mass is also zero.
What else can I help you with?
In the electron charge to mass experiment if the electron is replaced by a proton or neutron would the charge to mass ratio value still be the same why or why not?
Compared to the (charge/mass) ratio of the electron:-- The (charge/mass) ratio of the proton is much smaller; although the proton charge is equal to the electron charge, the proton mass is much larger, by a factor of more than 1,800.-- The (charge/mass) ratio of the neutron is zero, because the neutron charge is zero.
How many times greater is the mass of a proton than the mass of an electron?
1836 times the mass of an electronSo how do you calculate '1836 times the mass of a proton' ?Mass of proton = 1.673 x 10-27 or (10 to the power of negative 27)Mass of electron = 9.109 x 10-31 or (10 to the power of negative 31)Simply by dividing the largest mass (of protons) by the smallest mass (electrons):(1.67262 . 10-27) / (9.10939 . 10-31) = [1.67262 /9.10939] . [10(-27)-(-31)] =0.1836 . 10+4 = 1836
Which subatomic particle has the smallest mass alpha particle neutron electron proton?
among these Electron has the least mass....
Is the mass of an electron one hundredth the mass of a proton?
No, the mass of an electron is roughly 1/1836 the mass of a proton.
Who has the smallest mass electrons protons or neutrons?
Of the neutron, proton, and electron, the electron has the smallest mass.
What was the mass of the electron determined to be?
The mass of an electron is:0.000548579867 atomic mass units (amu)or,9.10938188 × 10-31 kilogramsor,9.10938188 × 10-28 grams
Why is electron regarded as universal particle?
because values of charge and mass of electron remains constant whatever may be the material.
What is the subatomic particle with a mass number of zero and a charge of -1?
In the atom a proton has the charge +1 and the electron the charge -1.
What the smallest particle in a atom?
Size on the scale of atoms is very hard to define. The electron has zero mass. Quarks have varying amounts of mass.
In the electron charge to mass experiment if the electron is replaced by a proton or neutron would the charge to mass ratio value still be the same why or why not?
Compared to the (charge/mass) ratio of the electron:-- The (charge/mass) ratio of the proton is much smaller; although the proton charge is equal to the electron charge, the proton mass is much larger, by a factor of more than 1,800.-- The (charge/mass) ratio of the neutron is zero, because the neutron charge is zero.
Is the mass of a proton half the mass of a electron?
No. The mass of a neutron is far, far, far greater than the mass of an electron. In fact, the mass of a neutron is approximately about 1840 times greater than the mass of an electron. The particle that has exactly the same mass as an electron is its antiparticle, the positron.
What has the least mass - electron neutron proton nucleus?
LEAST mass? That would be photos or neutrinos, which have no mass at all. Where Least is greater than zero? Electrons, probably; an electron is 1/1836th of a proton, I seem to recall. Neutrinos actually have a small nonzero mass, so small it has yet to be determined. No neutrino has a mass of more than a few eV, the electron has a mass of about 0.5MeV.
How many times greater is the mass of a proton than the mass of an electron?
1836 times the mass of an electronSo how do you calculate '1836 times the mass of a proton' ?Mass of proton = 1.673 x 10-27 or (10 to the power of negative 27)Mass of electron = 9.109 x 10-31 or (10 to the power of negative 31)Simply by dividing the largest mass (of protons) by the smallest mass (electrons):(1.67262 . 10-27) / (9.10939 . 10-31) = [1.67262 /9.10939] . [10(-27)-(-31)] =0.1836 . 10+4 = 1836
Why is the mass of an electron not used in determining the mass of an atom?
The mass of the electron is just so small compared to the mass of the protons and neutrons that it will not change it. Therefore the mass of the electron can safely be ignored.
What does the atomic mass of an electron represent?
The mass of an electron is atomic mass units is 5,485 799 090 70(16); the mass of the electron is not an atomic mass.
What is an electron's atomic mass number?
The electron has no atomic mass number. The mass of an electron is roughly 1/1800 of the mass of a proton or neutron.
Which has more mass-a proton or electron?
The proton has much more mass than the electron, by a factor of 1836 times, a ratio called "mu". Recent astronomical research suggests mu may have changed by 20 parts per million in the last 12 billion years, but I plan to wait at least a billion years for confirmation!
