Two isotopes have two neutrons: 3H and 4He.
The nucleus of the atom contains the protons and neutrons. The number of protons, called the "atomic number", determines what kind of element this is. There are almost always more neutrons in the nucleus than protons, except for very light elements. For example, hydrogen has one proton and no neutrons, while helium contains two protons and two neutrons.
The nucleus of a helium atom contains two protons and two neutrons.
I believe it is two isotopes of an element. Because an isotope is the amount of protons. with a different number of neutrons in the nucleus. hopefully this will help :)
nucleus....contains protons & neutrons
In a He-4 atom, the nucleus contains two protons and two neutrons. The protons have a positive charge, while neutrons are neutral.
Tritium is 3H, so it has one proton, one electron (in the non-ionized state) and two neutrons.
IsotopesThe number of protons in the nucleus of an atom determines the element. The number of neutrons can vary. If two atoms of the same element have a different number of neutrons in their nuclei, they are isotopes of that element.
Yes, a hydrogen atom with 2 neutrons is an isotope, specifically known as tritium. While the most common hydrogen isotope has no neutrons (protium), tritium contains one proton and two neutrons. Isotopes of an element have the same number of protons but different numbers of neutrons, resulting in different atomic masses.
The atom is composed of two parts, the nucleus, which contains the Protons and neutrons, and is positively charged; and the negative electrons surrounding it.
If you build an atom using two protons, two neutrons and two electrons you would build an atom of Helium. To be more-precise, this would create Helium-4 the common isotope of Helium.
By definition, an element is a single atom, not a molecule.
Helium has two neutrons and two protons in its nucleus.