Element 50
Tin (Sn)
Tin (Sn) is element 50 of the periodic table, a post-transition metal in period 5, group 14 (p-block) with an atomic mass of 118.71 and is a solid at standard conditions.
At a glance
- Atomic number
- 50
- Symbol
- Sn
- Atomic mass
- 118.71 u
- Category
- Post-transition metals
- Period
- 5
- Group
- 14
- Block
- p-block
- Phase at STP
- solid
Electron structure
- Electron configuration
- 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p2
- Shorthand configuration
- [Kr] 4d10 5s2 5p2
- Electrons per shell
- 2, 8, 18, 18, 4
- Oxidation states
- -4, -3, -2, -1, +1, +2, +3, +4
Physical properties
- Melting point
- 505.08 K (231.93 °C)
- Boiling point
- 2,875 K (2,601.85 °C)
- Density
- 7.287 g/cm³
- Phase
- solid
Atomic properties
- Electronegativity (Pauling)
- 1.96
- Atomic radius
- 145 pm
- Covalent radius
- 139 pm
- Van der Waals radius
- 217 pm
- First ionization energy
- 709 kJ/mol
- Electron affinity
- 107 kJ/mol
Notable isotopes
| Isotope | Mass | Abundance | Stability |
|---|---|---|---|
| Sn-120 | 119.9022 | 32.58% | Stable |
Common uses
- Tin cans
- Solder
- Bronze
- Pewter
Discovery
- Discovered by
- Known since antiquity
- Country
- Unknown
Frequently asked questions
- Is tin a metal?
- Yes. Tin is a metal, classified as a post-transition metal on the periodic table.
- How many protons does tin have?
- Tin has 50 protons. Its atomic number is 50, which is also the number of electrons in a neutral atom of tin.
- What group and period is tin in?
- Tin is in group 14 and period 5 of the periodic table, in the p-block.
- What is the atomic mass of tin?
- The atomic mass of tin is 118.71 u (unified atomic mass units).
Keep exploring
Tin's row is on the printable element property sheet, and its tile is on the periodic table wall chart - the same numbers as above, laid out for A4 or A3 paper.