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Protons have slightly less mass than Neutrons, and by slightly, it is a difference of 2x10-24 kg, ie, 24 zeroes after the decimal point. The difference is so miniscule, that they are considered to weigh the same for most intents and purposes.
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Who has the smallest mass electrons protons or neutrons?
Of the neutron, proton, and electron, the electron has the smallest mass.
Smallest known particle that makes up protons and neutrons?
Of those three the electron is the least massive.
What they do mass number?
Mass number is about the neutrons and protons. The total of neutrons and protons.
The mass number of an element is equal to the total number of?
The mass number is the average atomic mass of all the isotopes that are found in nature.
What is the sum of protons and neutrons in an atom?
Mass number!:)
The neutrons in an atom have the least amount of mass?
No actually, the neutrons and the protons of an atom are relatively the same in mass. Electrons have the smallest mass in an atom, and are not even considered when we look at the mas sof an atom.
What particles make up the mass of an atom?
The number of protons
What Make up nearly all of an atoms mass?
The sum of all protons and neutrons - Apex Learning
What particles are used to determined the mass of an atom?
Mass of an atom = mass of protons + mass of neutrons
What is the sum of protons neutrons in an atom?
Mass number = Protons+Neutrons
Which particles account for most of the atoms mass?
Physics has not managed to discover a particle that accounts for mass
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.
