atomic structure Flashcards
(6 cards)
1
Q
What is atomic number
A
the number of protons in the nucleus of it’s atom - identifies the atom
2
Q
what is the mass number
A
the total number of protons and neutrons in the nucleus
3
Q
What is an isotope?
A
atoms of the same element with different numbers of neutrons
4
Q
How to calculate relative isotopic mass?
A
mass of one isotope/
1/12 x mass of a carbon 12 atom
5
Q
How to calculate relative atomic mass?
A
average mass of one atom of an element/
1/12 x the mass of a carbon 12 atom
6
Q
how to calculate relative molecular mass?
A
average mass of one molecule / 1/12 x the mass of a carbon 12 atom
