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Why is the mass of an electron not used in determining the mass of an atom?
Wiki User
∙ 11y ago
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.
Wiki User
∙ 12y ago
Wiki User
∙ 8y agoBecause their weight is so small that on the whole it does not matter. It is something like 7.(something) times 10 to the negative (29-32, not sure) power
Wiki User
∙ 13y agoSince the mass of electrons is almost zero it is considered to be counted as part of the Atomic Mass.
Wiki User
∙ 11y agobecuase it is small
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Which of the following particles is used to determine the mass of an atom?
Mass of an atom is determined by the no. of protons+ no. of neutrons in the atom.
Why are electrons not used to determine the mass number or atomic mass of atoms?
because
Is the smallest particle used to build a molecule called an atom?
Yes and no. See, the atom is made up of three types of particles. Inside the atom is the Proton (+) the neutron (neutral) and the electron (-). The electron is by far the smallest. There are other, smaller particles that also exist inside atoms, but judging by the question, the electron is definitely the smallest you need to worry about. Its mass is something like 10^-31 kg.
What is used to find the mass of an atom?
The mass of an atom is obtained dividing the atomic weight of an isotope by the Avogadro number.
Which subatomic particle has such a small mass that is not used to calculate the atoms atomic mass?
electron
What part of an atom is not used in calculating the mass number?
All parts of the atom weigh something but when doing calculations electrons are said to have a mass of 0. This is because they actually have a mass of 1/1836 amu which is insignificantly small and so it is disregarded.
What part of an atom is used to tell how one atom will bond with another atom?
Electron
Which of the following particles is used to determine the mass of an atom?
Mass of an atom is determined by the no. of protons+ no. of neutrons in the atom.
Why electrons have no mass?
They have mass, it is just too little in comparison to the mass of the neutron and protons to be taken into account. Therefore when measuring the mass of an atom, the mass of the electron are not used. (To be exact,9.10938188 × 10-31 kilograms, and the mass of proton is 1.67262158 × 10-27 kilograms.)
What particles are used to determined the mass of an atom?
Mass of an atom = mass of protons + mass of neutrons
Why are electrons not used to determine the mass number or atomic mass of atoms?
because
Is the smallest particle used to build a molecule called an atom?
Yes and no. See, the atom is made up of three types of particles. Inside the atom is the Proton (+) the neutron (neutral) and the electron (-). The electron is by far the smallest. There are other, smaller particles that also exist inside atoms, but judging by the question, the electron is definitely the smallest you need to worry about. Its mass is something like 10^-31 kg.
Mass number used to calculate the number of?
the mass number of an atom is used to calculate the number of neutrons and protons in the nucleus of an atom
What machine is used to look at an atom?
Scanning tunneling electron microscope
What is used to find the mass of an atom?
The mass of an atom is obtained dividing the atomic weight of an isotope by the Avogadro number.
Which subatomic particle has such a small mass that is not used to calculate the atoms atomic mass?
electron
What is the Aufban Principle?
It is used to determine the electron configuration of an atom, molecule or ion.
