మూస:Infobox palladium

పల్లాడియం, ₀₀Pd
పల్లాడియం
Pronunciation	/pəˈleɪdiəm/ (pə-LAY-dee-əm)
Appearance	వెండిలాంటి తెలుపు
Standard atomic weight Ar°(Pd)
	106.42±0.01; 106.42±0.01 (abridged);
పల్లాడియం in the periodic table
	రోడియం ← పల్లాడియం → వెండి
Group	మూస:Infobox element/symbol-to-group/format
Period	period 5
Block	d-block
Electron configuration	[Kr] 4d10
Electrons per shell	2, 8, 18, 18
Physical properties
Phase at STP	solid
Melting point	1828.05 K (1554.9 °C, 2830.82 °F)
Boiling point	3236 K (2963 °C, 5365 °F)
Density (near r.t.)	12.023 g/cm3
when liquid (at m.p.)	10.38 g/cm3
Heat of fusion	16.74 kJ/mol
Heat of vaporization	362 kJ/mol
Molar heat capacity	25.98 J/(mol·K)
Atomic properties
Oxidation states	0, +1, +2, +3, +4, +5 (a mildly basic oxide)
Electronegativity	Pauling scale: 2.20
Atomic radius	empirical: 137 pm
Covalent radius	139±6 pm
Van der Waals radius	163 pm
	Spectral lines of పల్లాడియం
Other properties
Natural occurrence	primordial
Crystal structure	face-centered cubic (fcc)
Speed of sound thin rod	3070 m/s (at 20 °C)
Thermal expansion	11.8 µm/(m⋅K) (at 25 °C)
Thermal conductivity	71.8 W/(m⋅K)
Electrical resistivity	105.4 n Ω⋅m (at 20 °C)
Magnetic ordering	paramagnetic
Young's modulus	121 GPa
Shear modulus	44 GPa
Bulk modulus	180 GPa
Poisson ratio	0.39
Mohs hardness	4.75
Vickers hardness	461 MPa
Brinell hardness	310 MPa
CAS Number	7440-05-3
History
Discovery	William Hyde Wollaston (1803)
First isolation	William Hyde Wollaston (1803)
Isotopes of పల్లాడియం v; e;
	Template:infobox పల్లాడియం isotopes does not exist
	Category: పల్లాడియం; view; talk; edit; \| references

References

↑ "Standard Atomic Weights: Palladium". CIAAW. 1979.
↑ Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; et al. (2022-05-04). "Standard atomic weights of the elements 2021 (IUPAC Technical Report)". Pure and Applied Chemistry (in ఇంగ్లీష్). doi:10.1515/pac-2019-0603. ISSN 1365-3075.
↑ Palladium(V) has been identified in complexes with organosilicon compounds containing pentacoordinate palladium; see Shimada, Shigeru; Li, Yong-Hua; Choe, Yoong-Kee; Tanaka, Masato; Bao, Ming; Uchimaru, Tadafumi (2007). "Multinuclear palladium compounds containing palladium centers ligated by five silicon atoms". Proceedings of the National Academy of Sciences. 104 (19): 7758–7763. doi:10.1073/pnas.0700450104. PMC 1876520. PMID 17470819.
↑ 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] "Standard Atomic Weights: Palladium". CIAAW. 1979.

[CIAAW2021-2] Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; et al. (2022-05-04). "Standard atomic weights of the elements 2021 (IUPAC Technical Report)". Pure and Applied Chemistry (in ఇంగ్లీష్). doi:10.1515/pac-2019-0603. ISSN 1365-3075.

[3] Palladium(V) has been identified in complexes with organosilicon compounds containing pentacoordinate palladium; see Shimada, Shigeru; Li, Yong-Hua; Choe, Yoong-Kee; Tanaka, Masato; Bao, Ming; Uchimaru, Tadafumi (2007). "Multinuclear palladium compounds containing palladium centers ligated by five silicon atoms". Proceedings of the National Academy of Sciences. 104 (19): 7758–7763. doi:10.1073/pnas.0700450104. PMC 1876520. PMID 17470819.

[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.

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