Properties

CAS Number7440-31-5
PubChem CID5352426
Atomic Radius140
Atomic Volume16.3
Atomic Weight118.71
Blockp
Boiling Point2,602
Bulk Modulus
CategoryPost-transition metals
Crystal StructureCentered Tetragonal
ColorSilver
Covalent Radius139
Density7.287
Electrical Resistivity
Electron Configuration[Kr] 4d10 5s2 5p2
Electrons per shell2, 8, 18, 18, 4
Electronegativity1.96
Electrons50
Group14
Heat of Fusion7
Heat of Vaporization290
Ionization Potential7.344
Magnetic Ordering
Magnetic Susceptibility
Mass118.71
Mass Number50
Melting Point231.93
NameTin
Neutrons69
Atomic Number119
Oxidation States-4, 2, 4
Period5
PhaseSolid
Poisson Ratio
Protons50
Shear Modulus
Specific Heat Capacity0.228
SymbolSn
Thermal Conductivity0.666
Van der Waals radius
Young's Modulus
Abundance
Abundance in Earth's crust0.00022%
Abundance in Universe4×10-7%
Sn Tin 50 118.71 14 5 p 50 232.0 2270.0 [Kr] 4d10 5s2 5p2 2 8 18 18 4 7.31 0.00022% Silver Tetragonal 2.0 1.834 {"1":"708.6","2":"1411.8","3":"2943.0","4":"3930.3","5":"7456"} 709 107.3 141 +4,2 1.62 16.3 7.2 290.37 0.228 66.6 0 Solid, Paramagnetic, Conductor, Metal, Stable, Natural, PoorMetal TIN Silvery-white, soft, malleable and ductile metal. Used as a coating for steel cans since it is nontoxic and noncorrosive. Also in solder (33%Sn:67%Pb), bronze (20%Sn:80%Cu), and pewter. Stannous fluoride (SnF2), a compound of tin and fluorine is used in some toothpaste. Principally found in the ore cassiterite(SnO2) and stannine (Cu2FeSnS4). qEwCPJOP0Mg Tin
Strontium was recognized as a new element in 1790 when Adair Crawford and his colleague William Cruickshank analyzed a mineral sample from a lead mine near Strontian, Scotland.

The element was eventually isolated by Sir Humphry Davy in 1808.

The isolation was done by the electrolysis of a mixture containing strontium chloride and mercuric oxide. Named after Strontian, a town in Scotland 50 From the Anglo-Saxon word "tin" (the origin of the symbol Sn comes from the Latin word "stannum" meaning "tin")

Isotopes of Strontium

Standard Atomic Weight

118.710(7)

Stable Isotopes

112Sn 114Sn 115Sn 116Sn 117Sn 118Sn 119Sn 120Sn 122Sn 124Sn

Unstable Isotopes

99Sn 100Sn 101Sn 102Sn 103Sn 104Sn 105Sn 106Sn 107Sn 108Sn 109Sn 110Sn 111Sn 113Sn 121Sn 123Sn 125Sn 126Sn 127Sn 128Sn 129Sn 130Sn 131Sn 132Sn 133Sn 134Sn 135Sn 136Sn 137Sn

Strontium's non-radioactive isotopes are considered non-toxic
Strontium metal turns yellow when exposed to air
The primary use for strontium is in glass for color television cathode ray tubes.

Strontium salts are used in flares and fireworks for a crimson color.

Strontium chloride is used in toothpaste for sensitive teeth.

Strontium oxide is used to improve the quality of pottery glazes.