Periodic table

 

 

Atomic number:78

Group numbers:10

Period:6

Electronic configuration:Xe] 4f¹⁴ 5d⁹ 6s¹

Formal oxidation number:+2 +4

Electronegativities:2.2

Atomic radius / pm:137.3

Relative atomic mass:195.084 ± 0.009

 

Platinum was discovered by Julius Caesar Scaliger (IT) in 1557. The origin of the name comes from the Spanish word platina meaning silver. It is a rare, very heavy, soft, silvery-white metal that resists oxygen, water, corrosion, and acid attacks except aqua regia. Platinum is produced from deposits of native, or elemental. It is used in jewellery, to make crucible and special containers and as a catalyst. Platinum is used with cobalt to produce very strong magnets, also to make standard weights and measures.

PHYSICAL PROPERTIES

Density / g dm^-3:21450 (293 K)

Molar volume / cm³mol^-1:9.09 (293 K)

Electrical resistivity / μΩcm:10.6 (20 °C)

THERMAL PROPERTIES

Thermal conductivity / W m^-1K^-1:71.6

Melting point / °C:1768.4

Boiling point / °C:3825

Heat of fusion / kJ mol^-1:19.7

Heat of vaporization / kJ mol^-1:469

Heat of atomization / kJ mol^-1:564.42

IONIZATION ENERGIES

First ionization energy / kJ mol^-1:864.39

Second ionization energy / kJ mol^-1:1791.07

Third ionization energy / kJ mol^-1:-

ABUNDANCE OF ELEMENTS

in the atmosphere / ppm:-

in the Earth's crust / ppm:0.01

in the oceans / ppm:-

CRYSTALLOGRAPHIC DATA

ISOTOPES

REDUCTION POTENTIALS

 

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Periodic Table of the Elements

 

Citing this page:

Generalic, Eni. "Platinum." EniG. Periodic Table of the Elements. 3 Jan. 2012. KTF-Split. {Date of access}. <http://www.periodni.com/pt.html>.