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Because 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
What else can I help you with?
Can the mass number be used to determine the number of electrons in an atom?
No, the mass number (number of protons and neutrons) cannot be used to determine the number of electrons in an atom. The number of electrons in an atom is determined by the number of protons in the nucleus, which is the atomic number. Electrons are equal in number to protons in a neutral atom.
Why is it not necessary to include electrons when determining the mass of an atom?
While electrons do technically have a measurable mass, the proportion of the overall mass of the atom contributed by the electrons is negligible. The protons and neutrons in the nucleus contribute the vast majority of the mass of the atom and thus are the only parts considered.
How you can use the atoms mass number and atomic number to determine the number of protons electrons and neutrons in the atom?
The numbers of protons and of electrons in an atom are both the same as the atomic number, and the difference between the mass number and the atomic number is the number of neutrons in the atom.
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.
Why do you calculate the number of electrons by the atomic mass and number?
You calculate the number of electrons by the atomic mass and number because elements have the same number of electrons as they do protons. The atomic number tells you the number of protons, which is also the number of electrons in a neutral atom. By using the atomic mass to find the number of neutrons, you can determine the overall charge and number of electrons in an atom.
What determine the mass and an atom?
Protons, neutrons and electrons
What particule is used to determine the mass of an atom?
Protons, neutrons and electrons
What determine the atom mass?
Essentially an atom's mass is determined by its number of protons and neutrons, as mass of electrons is so minuscule relative the nucleus.
Can the mass number be used to determine the number of electrons in an atom?
No, the mass number (number of protons and neutrons) cannot be used to determine the number of electrons in an atom. The number of electrons in an atom is determined by the number of protons in the nucleus, which is the atomic number. Electrons are equal in number to protons in a neutral atom.
Why is it not necessary to include electrons when determining the mass of an atom?
While electrons do technically have a measurable mass, the proportion of the overall mass of the atom contributed by the electrons is negligible. The protons and neutrons in the nucleus contribute the vast majority of the mass of the atom and thus are the only parts considered.
Can the mass number of an element be used to determine the number of electrons in an atom?
No, the mass number of an element represents the total number of protons and neutrons in the nucleus, but it does not provide information about the number of electrons. The number of electrons in a neutral atom is equal to the number of protons in the nucleus.
Is it true that the mass number can be used to determine the number of electrons in an atom?
no --- atomic number
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.
How do you determine the numbers of the three types of particles in each atom?
In an atom, no. of protons = no. of electrons=atomic no. no. of neutrons=atomic mass-atomic no.
What is counted in an atom to determine mass number?
The mass number of an atom is determined by counting the total number of protons and neutrons in its nucleus. Electrons, which are much lighter than protons and neutrons, are not included in the mass number calculation.
Do neutrons determine the conductivity of the atom?
Neutrons do not directly affect the conductivity of an atom. Conductivity is primarily determined by the number and mobility of electrons in an atom. Neutrons only contribute to the mass of the atom and play a role in stabilizing the atomic nucleus.
If a neutral atom has a mass of 12 amu and an atomic number of 5 determine the number of protons neutrons and electrons in the atom.?
Protons: 5 Neutrons: 7 Electrons: 5
