Protons and Electrons
Isotopes
Rubidium has two natural isotopes (85Rb and 87Rb) and 30 artificial isotopes.
10 isotopes 10 isotopes
Nitrogen has two stable isotopes: N-14 and N-15 and 14 radioactive isotopes.
Lithium has two natural isotopes (6Li and 7Li).
Uranium isotopes
The isotopes of molybdenum have different electron configurations.
two that are known
To calculate the relative abundance of two isotopes, you would divide the abundance of one isotope by the total abundance of both isotopes and then multiply by 100 to get a percentage.
Their half life.
scientists Can tell the difference between two isotopes of the same element because, isotopes of the same elements always have the same number of protons.
The isotopes are uranium-235 or plutonium-239.