Isotopes of an element have a different number of neutrons. For example Uranium-235 and Uranium-238 look chemically identical but 238U atom is slightly more massive due to the three extra neutrons.
The mass number is the sum of the number of protons and the number of neutrons. Since every atom, ion, and isotope of the same element will have the same number of protons, the mass numbers of various isotopes are different due to the number of neutrons within each atom.
For example, Lithium has two isotopes: 6Li and 7Li. We also know that both atoms have 3 protons because they are both still lithium. Then all you have to do is do subtraction to figure out that 6Li has 3 neutrons and 7Li has 4 neutrons. This is how you are able to figure out the structures of isotopes and the number of neutrons (defining characteristics of isotopes) through mass numbers.
Atoms of the same element that differ in number of neutrons
radioactive decay
Isotopes of a chemical element have the same number of protons and electrons but a different number of neutrons.A radioactive isotope is unstable and can emit nuclear radiations.
In isotopes of a particular element, the number of neutrons differ where the number of protons and electrons remain same.
Yes; isotopes of the same element have the same atomic number but differ in their atomic masses.
Atoms of the same element that differ in number of neutrons
Atoms of the same element that differ in the number of neutrons they contain are known as isotopes.
radioactive decay
Isotopes of one particular element differ only in their number of neutrons in nucleus.
Isotopes of a chemical element have the same number of protons and electrons but a different number of neutrons.A radioactive isotope is unstable and can emit nuclear radiations.
Atoms of the same element may differ from one another by having differing numbers of Neutrons in their centres.
Neutron Capture.
In isotopes of a particular element, the number of neutrons differ where the number of protons and electrons remain same.
Yes; isotopes of the same element have the same atomic number but differ in their atomic masses.
An isotope is an atom of an element. Isotopes are atoms of the same element that have different numbers of neutrons. However, all atoms of the same element have the same number of protons.
One element differs from another element by the number of protons in their atoms. The number of protons in the atom is known as the atomic number. Also one isotope of an element differs from another isotope of the same element by the number of neutrons in their atoms.
They're called isotopes. The number of neutrons varies, but the chemistry stays the same.