Strontium

Sr Strontium Alkali Earth Metal

 

Atomic number:  38 Atomic weight:  87.62
Shells:  2,8,18,8,2 Orbitals:  [Kr] 5s2
Melting point:  769°C Boiling point:  1384°C
Covalent radius:  1.91 Å Atomic volume:  33.7 cm³/mol
Atomic radius:  2.45 Å Ionic radius:  1.26 (+2) Å
Electronegativity:  0.95 Oxidation states:  
1st ionization pot.:  5.6948 V 2nd ionization pot.:  11.03 V
3rd ionization pot.:  43.60 V Specific heat:  0.30 J/gK
Heat of fusion:  8.30 kJ/mol Heat of vapor.:  144.0 kJ/mol
Thermal conduct.:  0.353 W/cmK Electrical conduct.:  0.0762 10^6/cm ohm
Density:  2.6 g/cm³ Valence:  2