3.2 Atomic Structure Flashcards
1
Q
Atomic Number
A
The number of protons (/electrons)
2
Q
Mass number
A
The total number of protons and neutrons
3
Q
What subatomic elements does each atom contain?
A
Proton
Neutron
Electron
4
Q
Relative Mass of Subatomic elements
A
Proton: 1.0
Neutron: 1.0
Electron: 0.001
5
Q
Relative Charge of subatomic particles
A
Proton: +1
Neutron: 0
Electron: -1
6
Q
What is an Isotope
A
Atoms with the same number of protons but different number of neutrons
7
Q
Relative Atomic Mass
A
The average mass of an atom of an element (uses isotopes)
8
Q
Equation for RAM
A
(% abundance/100 x mass number) + (% abundance/100 x mass number) = RAM
9
Q
What is a period
A
Row = Period = Number of shells
10
Q
What is a group?
A
Column = Group = Number of electrons in the outer shell
11
Q
Electron configuration
A
Looks like this: 2:8:8:3
