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Thallium
(Tl)
0
4
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2
8
18
32
18
3
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Tl
Category
Post-transition metal
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Relative atomic mass
207.2
Density
11.4
Melting point (°C)
327.5
Boiling point (°C)
1749
Electronegativity (Pauling)
1.8
Discovery year
1861
Discovered by
William Crookes
Electrons: 81
Protons: 81
Neutrons: 123
Wikipedia
created by @lukaswyss
Thallium (Tl) – Element 81
