ഫലകം:Infobox iridium

Iridium, ₀₀Ir
Iridium
Pronunciation	/ɪˈrɪdiəm/ (i-RID-ee-əm)
Appearance	silvery white
Standard atomic weight Ar°(Ir)
	ഫലകം:Infobox element/standard atomic weight format
Iridium in the periodic table
	osmium ← iridium → platinum
Group	group 9
Period	period 6
Block	d-block
Electron configuration	[Xe] 4f14 5d7 6s2
Electrons per shell	2, 8, 18, 32, 15, 2
Physical properties
Phase at STP	solid
Melting point	2719 K (2446 °C, 4435 °F)
Boiling point	4403 K (4130 °C, 7466 °F)
Density (near r.t.)	22.56 g/cm3
when liquid (at m.p.)	19 g/cm3
Heat of fusion	41.12 kJ/mol
Heat of vaporization	564 kJ/mol
Molar heat capacity	25.10 J/(mol·K)
Atomic properties
Oxidation states	−3, −1, 0, +1, +2, +3, +4, +5, +6, +7, +8, +9
Electronegativity	Pauling scale: 2.20
Ionization energies	1st: 880 kJ/mol ; 2nd: 1600 kJ/mol ; ;
Atomic radius	empirical: 136 pm
Covalent radius	141±6 pm
	Spectral lines of iridium
Other properties
Natural occurrence	primordial
Crystal structure	face-centered cubic (fcc)
Speed of sound thin rod	4825 m/s (at 20 °C)
Thermal expansion	6.4 µm/(m⋅K)
Thermal conductivity	147 W/(m⋅K)
Electrical resistivity	47.1 nΩ⋅m (at 20 °C)
Magnetic ordering	paramagnetic
Molar magnetic susceptibility	+25.6·10−6 cm3/mol (298 K)
Young's modulus	528 GPa
Shear modulus	210 GPa
Bulk modulus	320 GPa
Poisson ratio	0.26
Mohs hardness	6.5
Vickers hardness	1760–2200 MPa
Brinell hardness	1670 MPa
CAS Number	7439-88-5
History
Discovery and first isolation	Smithson Tennant (1803)
Isotopes of iridium ക; തി;
	Template:infobox iridium isotopes does not exist
	വർഗ്ഗം: Iridium; view; talk; edit; \| references

Ir · Iridium
	^iso Ir E infobox E isobox	→ H ibox H
[[:Category:\|cat:Ir]] (0) cat:Ir-isotopes (0) Commons Wikidata: Wiktionary
indexes by PT (page) ക തി

Data sets read by {{Infobox element}}
Name and identifiers	view edit
Top image	view edit
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Pronunciation	view edit
Category (enwiki)	view edit
Standard atomic weight	view edit
most stable isotope	view edit
Oxidation states	view edit
Spectral lines image	view edit

References

↑ Wang, Guanjun; Zhou, Mingfei; Goettel, James T.; Schrobilgen, Gary G.; Su, Jing; Li, Jun; Schlöder, Tobias; Riedel, Sebastian (2014). "Identification of an iridium-containing compound with a formal oxidation state of IX". Nature. 514: 475–477. Bibcode:2014Natur.514..475W. doi:10.1038/nature13795. PMID 25341786.
↑ Lide, D. R., ed. (2005). "Magnetic susceptibility of the elements and inorganic compounds". CRC Handbook of Chemistry and Physics (PDF) (86th ed.). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5.
↑ Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4.

ഫലകം:വിവരണം/ഭാഗം

[IrIX-1] Wang, Guanjun; Zhou, Mingfei; Goettel, James T.; Schrobilgen, Gary G.; Su, Jing; Li, Jun; Schlöder, Tobias; Riedel, Sebastian (2014). "Identification of an iridium-containing compound with a formal oxidation state of IX". Nature. 514: 475–477. Bibcode:2014Natur.514..475W. doi:10.1038/nature13795. PMID 25341786.

[2] Lide, D. R., ed. (2005). "Magnetic susceptibility of the elements and inorganic compounds". CRC Handbook of Chemistry and Physics (PDF) (86th ed.). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5.

[3] Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4.

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