It is tritium
Isotopes are different forms of the same element which have different numbers of neutrons in their atomic nuclei. A given element is identified by the number of protons in its nucleus; that's its atomic number. Two different isotopes of the same element have the same number of protons, but each has a different number of neutrons in its nucleus. Different isotopes of the same element are chemically the same.
Helium has two neutrons and two protons in its nucleus.
Different isotopes of an element have the same number of protons but differ in the number of neutrons in their nuclei. This results in different atomic weights for each isotope. Isotopes of an element may exhibit different physical properties and may have varying degrees of stability.
Two different neutral isotopes of the same element have the same number of protons in their nucleus, which determines the element's identity. The isotopes differ in the number of neutrons they have, which leads to variations in atomic mass but not in chemical properties.
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.
Two isotopes have two neutrons: 3H and 4He.
nucleus....contains protons & 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 :)
The nucleus of a helium atom contains two protons and two neutrons.
At the simplest level of description, a nucleus contains protons and neutrons.
In a He-4 atom, the nucleus contains two protons and two neutrons. The protons have a positive charge, while neutrons are neutral.
Isotopes are different forms of the same element which have different numbers of neutrons in their atomic nuclei. A given element is identified by the number of protons in its nucleus; that's its atomic number. Two different isotopes of the same element have the same number of protons, but each has a different number of neutrons in its nucleus. Different isotopes of the same element are chemically the same.
The most common isotope of Hydrogen lacks a neutron in its nucleus. But there is an isotope, called deuterium, that has one neutron. Additionally, there is a hydrogen isotope that is artificially created that has two neutrons in its nucleus. It is called tritium. A link to the Wikipedia article on the isotopes of hydrogen is provided.
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.
Hydrogen contains one proton inside the nucleus and one electron revolving around the nucleus. Hydrogen has three isotopes namely protium, deuterium and tritium with 0, 1 and 2 neutrons respectively in the nucleus.
Helium has two neutrons and two protons in its nucleus.
An ALPHA particle may be thought of a a helium nucleus. It contains two protons and two neutrons. An alpha particle is a high speed helium nucleus (He^(2+)).