The mass of a proton is 1836 times greater than the mass of an electron.
The sum of masses of protons, neutrons and electrons.
They are equal
15 electrons and 15 protons
If the atom is atomically neutral (meaning that it does not hold a charge and it's not a cation or an anion), then the number of electrons and protons in an atom will be the same. If they do hold a charge (say if it is an anion), then it would have an extra electron. If it was positively charged, then an electron would be lost.
Carbon-12 has 6 protons, neutrons, and electrons.
If we give them relative numbers, the proton has a mass of 1.0073, the neutron has 1.0087 and the electron has 5.486 X 10 to negative 4.
The numbers of protons and the numbers of electrons balance; they are equal.
The sum of masses of protons, neutrons and electrons.
They are equal
They are equal
The answer depends on what you compare them with. Compared to protons, they do not.
mass of electron = 1/1836 mass of proton (or neutron)
Protons and electrons
The number of protons is usually the same as the number of electrons!:)
Because the masses of protons, neutrons and electrons are not whole numbers.
If you mean subatomic particle as in protons neutrons and electrons, electrons have the lowest mass. If you are talking even smaller, leptons have extremely tiny rest masses.
The mass of an atom is the sum of the masses of protons, neutrons and electrons.