Chemical element · Atomic number 50
Tin
Tin in the periodic table: atomic number 50, electron configuration, atomic mass, physical data, oxidation states, media credit and visible sources.
Post-transition metal
solid
118.71 u
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Atomic classification
Shell occupancy
Tin in the Bohr shell model
This shows the electron distribution of the neutral atom in a simplified shell model.
- K · n=1
- 2 electrons
- L · n=2
- 8 electrons
- M · n=3
- 18 electrons
- N · n=4
- 18 electrons
- O · n=5
- 4 electrons
- Electron configuration
- [Kr]5s2 4d10 5p2
- Electrons per shell
- 2 · 8 · 18 · 18 · 4
- Group
- 14
- Period
- 5
- Block
- P
- Element category
- Post-transition metal
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Physical and chemical properties
- Atomic mass
- 118.71 u
- Standard state
- solid
- Density
- 7.287 g/cm³
- Melting point
- 505.08 K
- Boiling point
- 2,875 K
- Electronegativity
- 1.96 (Pauling)
- First ionisation energy
- 7.344 eV
- Oxidation states
- +4, +2
- Discovery
- known since antiquity
Safety and periodic classification
Safety
Safe handling cannot be inferred from Tin's position in the periodic table alone. Laboratory, classroom and disposal decisions must follow the documentation for the exact material and its safety data sheet.
Position and comparison
Tin is in period 5, group 14 and the P block. Its direct neighbours by atomic number are Indium and Antimony. The recorded Pauling electronegativity is 1.96. Periodic trends are compared only through the separately sourced neighbouring values.
Sources and scope
PubChem attributes element data to sources including IUPAC, NIST and IAEA. Quanta stores the referenced snapshot locally and leaves unknown values unavailable.