Chemical Groups/Families Flashcards
1
Q
What are the four chemicals groups in a periodic table ?
A
Alkali metals, Alkali earth metals, Halogens and Noble gasses
2
Q
What are a few properties of alkali metals ?
A
- stored in oil
- their too unstable to exist alone (join halogens)
- soft and malleable
3
Q
What are a few properties of alkali earth metals ?
A
- soft
- reactive
- can be exposed to air
4
Q
What are a few properties of halogens ?
A
- disinfectants
- nonmetals
- very reactive
5
Q
What are a few properties of noble gasses ?
A
- unreactive
- exist alone
6
Q
How many valence electrons do alkali metals have ?
A
1
7
Q
How many valence electrons do alkali earth metals have ?
A
2
8
Q
How many valence electrons do halogens have ?
A
7
9
Q
How many valence electrons do noble gasses have ?
A
8
