Atomic Structure Flashcards
1
Q
Nuclide representation
A
top left: mass number
bottom left: number of protons
right: chemical symbol
2
Q
Atomic number
A
how many protons in the element
3
Q
Mass number
A
how many protons and neutrons
4
Q
Isotopes
A
Same number of protons, different neutrons
- mass number changes
5
Q
Electron configuration
A
2, 8, 18, 32
6
Q
Group 1
A
Alkali metals
7
Q
Group 2
A
Alkaline metals
8
Q
Group 17
A
Halogens
9
Q
Group 18
A
Noble gases
- Unreactive as they do not combine with other atoms
10
Q
Vertical columns
A
Groups
11
Q
Horizontal columns
A
Periods, have same number of shells containing elections
12
Q
Types of elements
A
metals, non-metals, metalloids
13
Q
Atom calculation
A
Number of protons = number of electrons
14
Q
calculate number of neutrons
A
mass number - atomic number
