Tin

Tin (chemical symbol - Sn, from Lat. Stannum) is a chemical element of the 14th group (according to the outdated classification - the fourth group of the main subgroup, IVA), the fifth period of the periodic system of chemical elements of D. I. Mendeleev, with atomic number 50[5].

It belongs to the group of light metals.

A simple substance tin (under normal conditions) is a ductile, malleable and fusible shiny silver-white post-transition metal. Four allotropic modifications of tin are known: below +13.2 °C, α-tin (gray tin) with a diamond-type cubic lattice is stable, above +13.2 °C, β-tin (white tin) with a tetragonal crystal lattice is stable[4]. At high pressures, γ-tin and σ-tin were also detected.