It is tritium
Two isotopes differ in the number of neutrons in the nucleus. For example, Carbon-14 has 8 neutrons differing from Carbon-12 which has 6 neutrons.
Helium has two neutrons and two protons in its nucleus.
If you subtract the atomic number form the atomic mass then the answer is the number of neutrons.
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.
An alpha particle is a helium-4 nucleus, and contains two protons and two neutrons. Therefore, the original nucleus will have two protons and two neutrons less. Its atomic number will be two less, and its atomic mass will be 4 less.
Two isotopes have two neutrons: 3H and 4He.
nucleus....contains protons & neutrons
A nucleus of the Cl-37 isotope contains two more neutrons than a nucleus of the Cl-35 isotope.
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.
Two isotopes differ in the number of neutrons in the nucleus. For example, Carbon-14 has 8 neutrons differing from Carbon-12 which has 6 neutrons.
Helium has two neutrons and two protons in its nucleus.
At the simplest level of description, a nucleus contains protons and neutrons.
If you subtract the atomic number form the atomic mass then the answer is the number of neutrons.
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.
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 atom is composed of two parts, the nucleus, which contains the Protons and neutrons, and is positively charged; and the negative electrons surrounding it.