Tɛmplet:Periodic table (alkali metals)

Alkali metals

Tɛmplet:Periodic table (32 columns, micro)

noble gases ← → alkaline earth metals

IUPAC group number	1
Name by element	lithium group
Trivial name	alkali metals
CAS group number (US, pattern A-B-A)	IA
old IUPAC number (Europe, pattern A-B)	IA

↓ Period

2

Image: Lithium metal stored under paraffin

Lithium (Li)
3

3

Image: Sodium metal

Sodium (Na)
11

4

Image: Potassium metal

Potassium (K)
19

5

Image: Rubidium metal in a glass ampoule

Rubidium (Rb)
37

6

Image: Caesium metal in a glass ampoule

Caesium (Cs)
55

7

Francium (Fr)
87

Legend

element by radioactive decay

Atomic number color:
black=solid

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