2.1.1 Atomic Structure Flashcards
1
Q
Mass and charge of proton
A
1
+1
2
Q
Mass and charge of neutron
A
1
0
3
Q
Mass and charge of electron
A
1/1800
-1
4
Q
Atomic number
A
Number of protons in nucleus
5
Q
Mass number
A
Total number of protons and neutrons in the atom
6
Q
Isotopes
A
Atoms of the same element with same number of protons, different number of neutrons
7
Q
Relative isotopic mass
A
Mass of one isotope compared to 1/12th mass of one atom of carbon-12
8
Q
Relative atomic mass
A
Weighted mean mass of an atom compared to 1/12th mass of one atom of carbon 12
9
Q
Relative molecular mass
A
Average mass of a molecule compared to 1/12th mass of one atom of carbon 12
10
Q
Relative atomic mass equation
A
isotopic mass x percentage abundance all divided by 100
