Atomic Element Z = 50 • Post-Transition Metal
Tin (Sn) — Atomic Data, Electron Shells & Reactions
Tin (symbol Sn, atomic number 50) has a standard atomic weight of 118.71 u and ground-state configuration [Kr] 4d10 5s2 5p2.
Atomic Number (Z)
50
IUPAC Symbol
Sn
Standard Atomic Weight
118.71 g/mol
Period / Group / Block
5 / 14 / p-block
Condensed Electron Config
[Kr] 4d10 5s2 5p2
Full Subshell Config
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p2
Principal Shell Occupancy
[2, 8, 18, 18, 4]
Pauling Electronegativity
1.96
First Ionization Energy
709 kJ/mol
Covalent Radius
139 pm
Melting Point
505.08 K (231.93 °C)
Boiling Point
2875 K (2601.85 °C)
Density
7.287 g/cm³
Oxidation States
+4, +2
Sn (Z=50) — Valence shell highlighted in vermilion