He is helium: it has 2 protons, 2 electrons and 2 neutrons, only less than 0.001% of He has only 1 neutron (He-3 isotope)
if its stable then it has 2 protons 2 neutrons and 2 electrons...of course if it isn't that may vary!
go twilight!
go muse!....go Peramore!!!!!!
Helium has two protons and two neutrons as its atomic number is 2. For He-4 isotope, there are two neutrons.
2 Neutrons.
2 Protons.
2 neutrons
2
The total amount of protons and neutrons in an atom is its mass number.
The total number of protons plus the total number of neutrons
The number of protons
Protons and Neutrons.
In an atom protons and neutrons are located in the atomic nucleus.
The total amount of protons and neutrons in an atom is its mass number.
If you add the number of protons to the number of neutrons in an atom, you have calculated that atom's atomic mass.
protons and neutrons are located in the atom's nucleus.
The total number of protons plus the total number of neutrons
mass number = protons + nuetrons
The number of protons
Protons and Neutrons.
The protons and neutrons of an atom are found in the nucleus of the atom.
The mass number is the sum of protons + neutrons.
The atomic mass.
atomic mass : )
Protons and neutrons. The amu of an atom is the total number of protons and neutrons added together.