Strontium Element Properties

Strontium

s37
Rb
Rubidium
s38
Sr
Strontium
d39
Y
Yttrium
General
Name(Strontium)
Symbol(Sr)
Number(38)
Group Number(2)
Group(Alkali earth metals)
Block(s)
Density(2.6 g/cm3)
Atomic Weight(87.62 g/mol)
Atomic Volume(33.7 cm3/mol)
Discover(1808)


States
State(Solid)
Melting Point(1050 K)
Boiling Point(1655 K)
Triple Point(Nil)
Critical Point(Nil)
Heat of Fusion(7.43 kJ/mol)
Heat of Vaporization(136.9 kJ/mol)


Energies
First Ionization Energy(549.5 kJ/mole)
Second Ionization Energy(1064.2 kJ/mole)
Third Ionization Energy(4206.7 kJ/mole)
Electronegativity(0.95)
Electron Affinity(Nil)
Specific Heat(0.30 J/gK)
Heat Atomization(164 kJ/mole atoms)


Oxidation and Electrons
Shells(2,8,18,8,2)
Electron Configuration([Kr] 5s2)
Minimum Oxidation Number(0)
Maximum Oxidation Number(2)
Minimum Common Oxidation Number(0)
Maximum Common Oxidation Number(2)


Appearance and Characteristics
Crystal Structure(cubic face centered)
Characteristics(tarnishes)
Color(silvery)
Uses(fireworks (red flame))
Hardness(1.8 mohs)
Toxicity(None)


Reactions
Reaction with Air(vigorous, =>SrO, Sr2N3)
Reaction with 6M HCl(vigorous, =>H2, SrCl2)
Reaction with 15M HNO3(vigorous, =>Sr(NO3)2, H2)
Reaction with 6M NaOH(None)


Other Forms
Number of Isotopes(4)
Hydride(SrH2)
Oxide(SrO)
Chloride(SrCl2)


Radius
Atomic Radius(215 pm)
Ionic Radius (1+ ion)(Nil)
Ionic Radius (1- ion)(Nil)
Ionic Radius (2+ ion)(132 pm)
Ionic Radius (2- ion)(Nil)
Ionic Radius (3+ ion)(Nil)


Conductivity
Thermal Conductivity(35.4 J/m-sec-deg)
Electrical Conductivity(43.478 1/mohm-cm)
Polarizability(27.6 A3)


Abundance
Source(Celestite (sulfide))
Relation Abundance Solar System(1.371 log)
Abundance Earths Crust(2.6 log)


s37
Rb
Rubidium
s38
Sr
Strontium
d39
Y
Yttrium

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