Template:Infobox calcium
- Temp: comparing dataset and input-parameter here to check. No effect in article. [January 2019]
- ok
- [Ar] 4s2 -- infobox
- [Ar] 4s2 -- dataset
- Using symb-to-elconfig dataset now. DIFFs marked here may be caused by technical issues wrt reference handling, not actual diffs. -DePiep (talk) 20:17, 3 February 2019 (UTC)
General properties | |||||||||||||||||||||||||||||||||||||||||||||||||||||
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Appearance | dull gray, silver; with a pale yellow tint[1] | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Standard atomic weight (Ar, standard) | 40.078(4)[2] | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Calcium in the periodic table | |||||||||||||||||||||||||||||||||||||||||||||||||||||
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Atomic number (Z) | 20 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Group | group 2 (alkaline earth metals) | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Period | period 4 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Block | s-block | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Element category | alkaline earth metal | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Electron configuration | [Ar] 4s2 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Electrons per shell | 2, 8, 8, 2 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Physical properties | |||||||||||||||||||||||||||||||||||||||||||||||||||||
Phase at STP | Ca: Solid | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Melting point | 1115 K (842 °C, 1548 °F) | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Boiling point | 1757 K (1484 °C, 2703 °F) | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Density (near r.t.) | 1.55 g/cm3 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
when liquid (at m.p.) | 1.378 g/cm3 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Heat of fusion | 8.54 kJ/mol | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Heat of vaporization | 154.7 kJ/mol | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Molar heat capacity | 25.929 J/(mol·K) | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Vapor pressure
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Atomic properties | |||||||||||||||||||||||||||||||||||||||||||||||||||||
Oxidation states | +1,[3] +2 (a strongly basic oxide) | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Electronegativity | Pauling scale: 1.00 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Ionization energies |
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Atomic radius | empirical: 197 pm | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Covalent radius | 176±10 pm | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Van der Waals radius | 231 pm | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Spectral lines of calcium | |||||||||||||||||||||||||||||||||||||||||||||||||||||
Other properties | |||||||||||||||||||||||||||||||||||||||||||||||||||||
Natural occurrence | Ca: Primordial | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Crystal structure | face-centered cubic (fcc) | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Speed of sound thin rod | 3810 m/s (at 20 °C) | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Thermal expansion | 22.3 µm/(m·K) (at 25 °C) | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Thermal conductivity | 201 W/(m·K) | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Electrical resistivity | 33.6 nΩ·m (at 20 °C) | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Magnetic ordering | diamagnetic | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Magnetic susceptibility | +40.0·10−6 cm3/mol[4] | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Young's modulus | 20 GPa | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Shear modulus | 7.4 GPa | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Bulk modulus | 17 GPa | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Poisson ratio | 0.31 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Mohs hardness | 1.75 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Brinell hardness | 170–416 MPa | ||||||||||||||||||||||||||||||||||||||||||||||||||||
CAS Number | 7440-70-2 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
History | |||||||||||||||||||||||||||||||||||||||||||||||||||||
Discovery and first isolation | Humphry Davy (1808) | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Main isotopes of calcium | |||||||||||||||||||||||||||||||||||||||||||||||||||||
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References
- ↑ Template:Greenwood&Earnshaw
- ↑ Meija, J.; Coplen, T. B.; Berglund, M.; Brand, W.A.; De Bièvre, P.; Gröning, M.; Holden, N.E.; Irrgeher, J.; Loss, R.D.; Walczyk, T.; Prohaska, T. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry. 88 (3): 265–91. doi:10.1515/pac-2015-0305.
{{cite journal}}
: Unknown parameter|displayauthors=
ignored (|display-authors=
suggested) (help) - ↑ 3.0 3.1 Krieck, Sven; Görls, Helmar; Westerhausen, Matthias (2010). "Mechanistic Elucidation of the Formation of the Inverse Ca(I) Sandwich Complex [(thf)3Ca(μ-C6H3-1,3,5-Ph3)Ca(thf)3] and Stability of Aryl-Substituted Phenylcalcium Complexes". Journal of the American Chemical Society. 132 (35): 12492–12501. doi:10.1021/ja105534w. PMID 20718434.
- ↑ 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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References
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Tracking categories
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Index by periodic table
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