Helium isotope
2 protons 2 electrons 2 neutrons 2 protons 2 electrons 2 neutrons don't know
A helium atom has 2 protons, 2 neutrons, and 2 electrons.
(a) a sodium atom with 11 protons, 11 electrons, and 12 neutrons (b) a calcium atom with 20 protons, 18 electrons, and 20 neutrons (c) a helium atom with 2 protons, 2 electrons, and 2 neutrons (d) an iron atom with 26 protons, 26 electrons, and 30 neutrons
If the atom has a balanced electrical charge, then # of protons = # of electrons, so the atom has 2 protons (Helium). The vast majority of Helium atoms have 2 neutrons.
Helium has 2 protons, 2 neutrons, and 2 electrons.
Helium has 2 protons, 2 neutrons, and 2 electrons. The atomic number of helium is 2, which indicates it has 2 protons and 2 electrons in a neutral atom.
A helium atom consists of 2 protons, 2 electrons and 2 neutrons.
For a standard atom, the number of protons, electrons, and neutrons is the same. For example: 2 Protons - 2 Neutrons - 2 Electrons Helium 3 Protons - 3 Neutrons - 3 Electrons Lithium 4 Protons - 4 Neutrons - 4 Electrons Beryllium So... 53 Protons - 53 Neutrons - 53 Electrons Iodine
In normal Helium(He) atom there are 2 electrons, 2protons and 2 neutrons.
The normal helium atom has two protons and two neutrons in the nucleus, and two electrons in the "shell".
One atom of helium contains 2 protons and 2 electrons. The most abundant isotope of helium, helium-4, has 2 neutrons. The other, rare isotope of helium, helium-3, has 1 neutron. (Source: Wikipedia)
Helium-4 has 2 protons and 2 neutrons, and is formed both by the fusion of hydrogen in stars and in the decay of heavy radioactive elements. The neutral atom has 2 electrons.