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Tɛmplet:Periodic table (alkali metals)

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Alkali metals
Tɛmplet:Periodic table (32 columns, micro)
noble gases ←    → alkaline earth metals
IUPAC group number1
Name by elementlithium group
Trivial namealkali 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

primordial
element by radioactive decay
Atomic number color:
black=solid
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