Key terms

Cards (8)

What is an isotope?
Atoms of the same element, with the same number of protons but a different number of neutrons.
Define relative atomic mass.
The weighted mean mass of an atom of an element in relation to the mass of an atom of 1/12 of a carbon-12.
Define relative isotopic mass.
The mass of an isotope in relation to the mass of 1/12 of a an atom of carbon-12.
what group are noble gases found in?
Group 8 (0)
What group are alkali metals found in?
Group 1
What group are halogens found in?
Group 7
What is the mass number of an atom measured in?
Units of amu
Do isotopes have different chemical properties to one another?
No they have very similar chemical characteristics