50Sn118.711
Post-Transition Metalp-block
Tin
Element 50 on the periodic table, symbol Sn, group 14, period 5.
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.
Appearance: silvery-white (beta, β) or gray (alpha, α)
Properties
- Atomic Number
- 50
- Atomic Mass
- 118.7107 u
- Group
- 14
- Period
- 5
- Block
- p-block
- Category
- Post-Transition Metal
- State at 25 °C
- Solid
- Melting Point
- 505.1 K · 231.9 °C
- Boiling Point
- 2,875 K · 2,601.9 °C
- Density
- 7.365 g/cm³
- Atomic Radius
- 145 pm
- Electronegativity
- 1.96
- Oxidation States
- +2, +4
- Abundance in Crust
- 2.3 mg/kg
- Discovered
- Known since antiquity
- Discovered By
- No individual credited
Electron Configuration
[Kr] 4d10 5s2 5p2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p2
Ionisation Energies (kJ/mol)
- 1. 708.6
- 2. 1,411.8
- 3. 2,943
- 4. 3,930.3
- 5. 7,456
Elements near Tin
Elements in the same group share the number of outer electrons and behave in similar ways. Elements in the same period share a shell, so they change steadily from left to right.