2.1.1 - Atomic Structure and Isotopes Flashcards
1
Q
what is an isotope?
A
atoms of the same element with the same number of protons and different numbers of neutrons (different masses)
2
Q
what is meant by relative isotopic mass?
A
the mass of an isotope compared with 1/12th mass of an atom of carbon-12
3
Q
what is meant by relative atomic mass?
A
the weighted mean mass of an atom of an element compared with 1/12th mass of an atom of carbon-12
4
Q
how are elements ordered in the periodic table?
A
by atomic (proton) number
