Periodic table

 

 

Atomic number:38

Group numbers:2

Period:5

Electronic configuration:[Kr] 5s²

Formal oxidation number:+2

Electronegativities:0.95

Atomic radius / pm:215.1

Relative atomic mass:87.62 ± 0.01

 

Strontium was discovered by Adair Crawford (GB) in 1789. Named after the village of Strontian in Scotland. It is a soft, malleable, silvery-yellow metal that is combustible in air and reacts with water. Exposed surfaces form protective oxide film. It ignites and burns readily. Strontium is found in minerals celestite and strontianite. Strontium is used in flares and fireworks for crimson colour. Strontium-90 is a long lived highly radioactive fallout product of atomic-bomb explosions.

PHYSICAL PROPERTIES

Density / g dm^-3:2540 (293 K)

 2375 (m.p.)

Molar volume / cm³mol^-1:34.50 (293 K)

 36.89 (m.p.)

Electrical resistivity / μΩcm:23 (20 °C)

THERMAL PROPERTIES

Thermal conductivity / W m^-1K^-1:49

Melting point / °C:777

Boiling point / °C:1382

Heat of fusion / kJ mol^-1:9.16

Heat of vaporization / kJ mol^-1:154.4

Heat of atomization / kJ mol^-1:164.4

IONIZATION ENERGIES

First ionization energy / kJ mol^-1:549.48

Second ionization energy / kJ mol^-1:1064.25

Third ionization energy / kJ mol^-1:4138.29

ABUNDANCE OF ELEMENTS

in the atmosphere / ppm:-

in the Earth's crust / ppm:260

in the oceans / ppm:8

CRYSTALLOGRAPHIC DATA

ISOTOPES

REDUCTION POTENTIALS

 

Scientific calculator for chemists
Download printable materials	|   |	Free software for Windows
Periodic Table of the Elements

 

Citing this page:

Generalic, Eni. "Strontium." EniG. Periodic Table of the Elements. 16 May 2013. KTF-Split. {Date of access}. <http://www.periodni.com/sr.html>.