మూస:ఆర్సెనిక్ మూలకము

ఆర్సెనిక్, ₀₀As
ఆర్సెనిక్
Pronunciation	/ˈɑːrsənɪk/; (AR-sən-ik); as an adjective: /ɑːrˈsɛnɪk/; (ar-SEN-ik);
Allotropes	grey (most common), yellow, black (see Allotropes of arsenic)
Appearance	metallic grey
Standard atomic weight Ar°(As)
	74.921595±0.000006; 74.922±0.001 (abridged);
ఆర్సెనిక్ in the periodic table
	జెర్మేనియం ← ఆర్సెనిక్ → సెలీనియం
Group	మూస:Infobox element/symbol-to-group/format
Period	period 4
Block	p-block
Electron configuration	[Ar] 3d10 4s2 4p3
Electrons per shell	2, 8, 18, 5
Physical properties
Phase at STP	solid
Sublimation point	887 K (615 °C, 1137 °F)
Density (near r.t.)	5.727 g/cm3
when liquid (at m.p.)	5.22 g/cm3
Triple point	1090 K, 3628 kPa
Critical point	1673 K, ? MPa
Heat of fusion	(grey) 24.44 kJ/mol
Heat of vaporization	? 34.76 kJ/mol
Molar heat capacity	24.64 J/(mol·K)
Atomic properties
Oxidation states	−3, −2, −1, 0, +1, +2, +3, +4, +5 (a mildly acidic oxide)
Electronegativity	Pauling scale: 2.18
Ionization energies	(more);
Atomic radius	empirical: 119 pm
Covalent radius	119±4 pm
Van der Waals radius	185 pm
	Spectral lines of ఆర్సెనిక్
Other properties
Natural occurrence	primordial
Crystal structure	trigonal
Thermal conductivity	50.2 W/(m⋅K)
Electrical resistivity	333 n Ω⋅m (at 20 °C)
Magnetic ordering	diamagnetic
Young's modulus	8 GPa
Bulk modulus	22 GPa
Mohs hardness	3.5
Brinell hardness	1440 MPa
CAS Number	7440-38-2
History
Discovery	Early Bronze Age (2500 BC)
First isolation	Albertus Magnus (1250)
Isotopes of ఆర్సెనిక్ v; e;
	Template:infobox ఆర్సెనిక్ isotopes does not exist
	Category: ఆర్సెనిక్; view; talk; edit; \| references

References

↑ "Standard Atomic Weights: Arsenic". CIAAW. 2013.
↑ 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.
↑ Gokcen, N. A (1989). "The As (arsenic) system". Bull. Alloy Phase Diagrams. 10: 11–22. doi:10.1007/BF02882166.
↑ Abraham, Mariham Y.; Wang, Yuzhong; Xie, Yaoming; Wei, Pingrong; Shaefer III, Henry F.; Schleyer, P. von R.; Robinson, Gregory H. (2010). "Carbene Stabilization of Diarsenic: From Hypervalency to Allotropy". Chemistry: A European Journal. 16 (2): 432–5. doi:10.1002/chem.200902840. PMID 19937872.
↑ Ellis, Bobby D.; MacDonald, Charles L. B. (2004). "Stabilized Arsenic(I) Iodide: A Ready Source of Arsenic Iodide Fragments and a Useful Reagent for the Generation of Clusters". Inorganic Chemistry. 43 (19): 5981–6. doi:10.1021/ic049281s. PMID 15360247.
↑ Arsenic, mindat.org
↑ David R. Lide. (2000). "Magnetic susceptibility of the elements and inorganic compounds". Handbook of Chemistry and Physics (PDF) (81 ed.). CRC press. ISBN 0849304814.
↑ Ellis, Bobby D.; Charles L. B. (2004). "Stabilized Arsenic(I) Iodide: A Ready Source of Arsenic Iodide Fragments and a Useful Reagent for the Generation of Clusters". Inorganic Chemistry. 43: 5981. doi:10.1021/ic049281s.

[1] "Standard Atomic Weights: Arsenic". CIAAW. 2013.

[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.

[Gokcen1989-3] Gokcen, N. A (1989). "The As (arsenic) system". Bull. Alloy Phase Diagrams. 10: 11–22. doi:10.1007/BF02882166.

[4] Abraham, Mariham Y.; Wang, Yuzhong; Xie, Yaoming; Wei, Pingrong; Shaefer III, Henry F.; Schleyer, P. von R.; Robinson, Gregory H. (2010). "Carbene Stabilization of Diarsenic: From Hypervalency to Allotropy". Chemistry: A European Journal. 16 (2): 432–5. doi:10.1002/chem.200902840. PMID 19937872.

[5] Ellis, Bobby D.; MacDonald, Charles L. B. (2004). "Stabilized Arsenic(I) Iodide: A Ready Source of Arsenic Iodide Fragments and a Useful Reagent for the Generation of Clusters". Inorganic Chemistry. 43 (19): 5981–6. doi:10.1021/ic049281s. PMID 15360247.

[6] Arsenic, mindat.org

[7] David R. Lide. (2000). "Magnetic susceptibility of the elements and inorganic compounds". Handbook of Chemistry and Physics (PDF) (81 ed.). CRC press. ISBN 0849304814.

[8] Ellis, Bobby D.; Charles L. B. (2004). "Stabilized Arsenic(I) Iodide: A Ready Source of Arsenic Iodide Fragments and a Useful Reagent for the Generation of Clusters". Inorganic Chemistry. 43: 5981. doi:10.1021/ic049281s.

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మూస:ఆర్సెనిక్ మూలకము

References

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