Kalsiyum

Kalsium, ₂₀Ca
General properties
Wujud	putih asemu pérak
Bobot atom standar (Ar, standard)	40.078(4)
Kalsium in the periodic table
	kalium ← kalsium → skandium
Atomic number (Z)	20
Group	group 2 (alkaline earth metals)
Period	period 4
Blok	s-block
Konfigurasi èlèktron	[Ar] 4s2
Electrons per shell	2, 8, 8, 2
Sipat angga
Phase at STP	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)
Atomic properties
Oxidation states	2 oksida basa kuwat
Electronegativity	Pauling scale: 1,00
Ionization energies	(more);
Atomic radius	empirical: 180 pm ; calculated: 194 pm
Covalent radius	174 pm
	Spectral lines
	Spectral lines
Miscellanea
Crystal structure	kubik mawa punjer muka Kubik mawa punjer muka crystal structure for kalsium
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 n Ω·m (at 20 °C)
Magnetic ordering	paramagnetik
Young's modulus	20 GPa
Shear modulus	7,4 GPa
Bulk modulus	17 GPa
Poisson ratio	0,31
Mohs hardness	1,75
Brinell hardness	167 MPa
CAS Number	7440-70-2
Main isotopes of kalsium
	deleng; rembug; besut; \| references \| in Wikidata

Pèngetan pratuduh: unknown parameter "2nd ionization energy"

Pèngetan pratuduh: unknown parameter "phase color"

Pèngetan pratuduh: unknown parameter "series"

Pèngetan pratuduh: unknown parameter "1st ionization energy"

Pèngetan pratuduh: unknown parameter "series comment"

Pèngetan pratuduh: unknown parameter "atomic mass"

Pèngetan pratuduh: unknown parameter "atomic mass 2"

Pèngetan pratuduh: unknown parameter "3rd ionization energy"

Pèngetan pratuduh: unknown parameter "series color"

Pèngetan pratuduh: unknown parameter "atomic mass comment"

Kalsium (calcium (Ca)), iku unsur élemèn kimia, salah sawijiné logam alkalin bumi saka golongan 2 (IIa) ing tabel periodik.^[2] Kalsium iku unsur logam kang akèh dhéwé sajeroning awak manungsa lan élemèn kalima kang akèh dhéwé ing kerak Bumi.^[2]

↑ Meija, J.; 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.
↑ ^a ^b Britannica (diaksès tanggal 19 Mèi 2011)

[CIAAW2016-1] Meija, J.; 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.

[Britannica-2] Britannica (diaksès tanggal 19 Mèi 2011)

[1]

[2]

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Kalsiyum

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