Sn
Tin · element 50
Post-Transition Metal · Solid at room temperature
Tin is a chemical element with the symbol Sn (for Latin:stannum) and atomic number 50. It is a main group metal in group 14 of the periodic table. Tin shows a chemical similarity to both neighboring group-14 elements, germanium and lead, and has two possible oxidation states, +2 and the slightly more stable +4.
Key facts
Atomic mass
118.7107 u
how heavy one atom is
Phase (room temp.)
Solid
Density
7.365 g/cm³
how tightly packed it is
Melting point
505.08 K (232 °C)
when solid turns to liquid
Boiling point
2875 K (2602 °C)
when liquid turns to gas
Period
5
its row in the periodic table
Group
14
its column in the periodic table
Block
P-block
the neighbourhood it lives in
Electronegativity
1.96
how strongly it pulls electrons
Electron configuration
[Kr] 4d10 5s2 5p2
where its electrons live
Shells
2 · 8 · 18 · 18 · 4
electrons in each layer, inside to out
Discovered by
unknown, before 3500 BC
who found it
Appearance
silvery-white (beta, β) or gray (alpha, α)
what it looks like
Source: Wikipedia