Template:Infobox indium

Indium, ₄₉In
Indium
Pronunciation	/ˈɪndiəm/ (IN-dee-əm)
Appearance	sillery lustrous gray
Standard atomic weight Ar, std(In)	114.818(1)
Indium in the periodic cairt
	cadmium ← indium → tin
Atomic nummer (Z)	49
Group	group 13 (boron group)
Period	period 5
Block	p-block
Element category	Post-transeetion metal
Electron confeeguration	[Kr] 4d10 5s2 5p1
Electrons per shell	2, 8, 18, 18, 3
Pheesical properties
Phase at STP	solit
Meltin pynt	429.7485 K (156.5985 °C, 313.8773 °F)
Bylin pynt	2345 K (2072 °C, 3762 °F)
Density (near r.t.)	7.31 g/cm3
when liquid (at m.p.)	7.02 g/cm3
Treeple pynt	429.7445 K, ~1 kPa
Heat o fusion	3.281 kJ/mol
Heat o vapourisation	231.8 kJ/mol
Molar heat capacity	26.74 J/(mol·K)
Atomic properties
Oxidation states	−5, −2, −1, +1, +2, +3 (an amphoteric oxide)
Electronegativity	Pauling scale: 1.78
Atomic radius	empirical: 167 pm
Covalent radius	142±5 pm
Van der Waals radius	193 pm
	Colour lines in a spectral rangeSpectral lines o indium
Ither properties
Naitural occurrence	primordial
Creestal structur	tetragonal
Speed o soond thin rod	1215 m/s (at 20 °C)
Thermal expansion	32.1 µm/(m·K) (at 25 °C)
Thermal conductivity	81.8 W/(m·K)
Electrical resistivity	83.7 n Ω·m (at 20 °C)
Magnetic orderin	diamagnetic
Young's modulus	11 GPa
Mohs haurdness	1.2
Brinell haurdness	8.83 MPa
CAS Nummer	7440-74-6
History
Diskivery	Ferdinand Reich an Hieronymous Theodor Richter (1863)
First isolation	Hieronymous Theodor Richter (1867)
Main isotopes o indium
	Decay modes in parentheses are predictit, but hae nae yet been observed
	view; talk; edit; \| references

style="text-align:left"\| data m.p. cat v
	in	calc from C	diff	report	ref
C	156.5985	—	—
K	429.7485	429.7485	0
F	313.8773	313.8773	0
WD	314 !314 Fahrenheit				^[5]
input	C: 156.5985, K: 429.7485, F: 313.8773
comment

style="text-align:left"\| data b.p. cat v
	in	calc from C	diff	report	ref
C	2072	—	—
K	2345	2345	0
F	3762	3762	0
WD	3767 !3767 Fahrenheit				^[5]
input	C: 2072, K: 2345, F: 3762
comment

References

↑ Meija, Juris; et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry. 88 (3): 265–91. doi:10.1515/pac-2015-0305.
↑ Mangum, B W (1989). "Determination of the Indium Freezing-point and Triple-point Temperatures". Metrologia. 26 (4): 211. Bibcode:1989Metro..26..211M. doi:10.1088/0026-1394/26/4/001.
↑ Guloy, A. M.; Corbett, J. D. (1996). "Synthesis, Structure, and Bonding of Two Lanthanum Indium Germanides with Novel Structures and Properties". Inorganic Chemistry. 35 (9): 2616–22. doi:10.1021/ic951378e.
↑ Magnetic susceptibility of the elements and inorganic compounds, in Lide, D. R., ed. (2005). CRC Handbook of Chemistry and Physics (86th ed.). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5.
1 2 http://www.cdc.gov/niosh/npg/npgd0341.html.

[CIAAW2013-1] Meija, Juris; et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry. 88 (3): 265–91. doi:10.1515/pac-2015-0305.

[2] Mangum, B W (1989). "Determination of the Indium Freezing-point and Triple-point Temperatures". Metrologia. 26 (4): 211. Bibcode:1989Metro..26..211M. doi:10.1088/0026-1394/26/4/001.

[3] Guloy, A. M.; Corbett, J. D. (1996). "Synthesis, Structure, and Bonding of Two Lanthanum Indium Germanides with Novel Structures and Properties". Inorganic Chemistry. 35 (9): 2616–22. doi:10.1021/ic951378e.

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

[wikidata-d7af92cb4aa3bb659a8def2d59cd519c864e5951-v3-5] 1 2 http://www.cdc.gov/niosh/npg/npgd0341.html.

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