Kalcij[um] (Ca)

hemijski element sa simbolom Ca i atomskim brojem 20

Atomic Number	20
Atomic Weight	40.078
Maseni broj	40

Group	2
Period	4
Block	s

Proton	20 p⁺
Neutron	20 n⁰
Elektron	20 e^-

Animated Bohrov model atoma of Ca (Kalcij[um])

Physical Property

Atomski Radijus	180 pm 270 pm
Molarni volumen	29,9 cm³/mol
covalent radius	171 pm 147 pm 133 pm 170 pm 176 pm
Metallic Radius	174 pm 197 pm
Ionski radijus	100 pm 106 pm 112 pm 118 pm 123 pm 134 pm
Crystal Radius	114 pm 120 pm 126 pm 132 pm 137 pm 148 pm
Van der Waalsov radijus	240 pm 231 pm 281 pm 231 pm 339,9 pm
gustoća	1,54 g/cm³ 1.378 kg/m³

Chemical Property

{ERROR}

energija

proton affinity
electron affinity	0,02455 eV/particle
ionization energy	6,1131552 eV/particle 11,871718 eV/particle 50,91315 eV/particle 67,2732 eV/particle 84,338 eV/particle 108,78 eV/particle 127,2 eV/particle 147,24 eV/particle 188,535 eV/particle 211,2751 eV/particle 591,6 eV/particle 658,24 eV/particle 728,6 eV/particle 817,22 eV/particle 893,98 eV/particle 973,7 eV/particle 1.086,8 eV/particle 1.157,726 eV/particle 5.128,8576 eV/particle 5.469,8614 eV/particle

Toplota isparavanja	153,6 kJ/mol
toplota topljenja	9,2 kJ/mol
standard enthalpy of formation	177,8 kJ/mol
Elektron

electron shell	2, 8, 8, 2

Valentni elektron	2 ⓘ

electron configuration	[Ar] 4s²ⓘ 1s² 2s² 2p⁶ 3s² 3p⁶ 4s²

oksidacijsko stanje	1, 2
Elektronegativnost	6,113 eV/particle 0.1154119 1
Electrophilicity Index	0,7734001442996138 eV/particle
fundamental state of matter

agregatno stanje
gaseous state of matter
Boiling Point	1.757,15 K
Melting Point	1.115,15 K
critical pressure
Kritična temperatura
Trojna tačka
appearance
boja	Black #808090 #3dff00 #3dff00
appearance
Indeks prelamanja
thermodynamic material property
Thermal Conductivity
thermal expansion	0,0000223 1/K
molar heat capacity	25,929 J/(mol K)
Specific Heat Capacity	0,647 J/(g⋅K)
heat capacity ratio
electrical properties
type	Conductor
Specifična električna provodljivost	29 MS/m
electrical resistivity	0,00000003399999999999 Ω*m
Superprovodljivost
Magnetizam
type	paramagnetic
magnetic susceptibility (Mass)	0,0000000138 m³/Kg
magnetic susceptibility (Molar)	0,0000000005531 m³/mol
magnetic susceptibility (Volume)	0,00002139
magnetic ordering
Kirijeva tačka
Néel temperature
struktura
Crystal Structure	{ERROR}
lattice constant	5,58 Å
Lattice Angles	π/2, π/2, π/2
mechanical property
Tvrdoća	167 MPa 1,75 MPa
bulk modulus	17 GPa
shear modulus	7,4 GPa
Young's modulus	20 GPa
Poisson's ratio	0,31
Brzina zvuka	3.810 m/s
klasifikacija
Category	Actinides, Alkaline earth metals
CAS Group	IIA
IUPAC Group	IIA
Glawe Number	16
Mendeleev Number	7
Pettifor Number	16
Geochemical Class	major
Goldschmidt classification	litophile

other

Gas Basicity
polarizability	160,8 ± 4 a₀
C6 Dispersion Coefficient	2.163 a₀ 2.230 a₀
allotrope
Neutron cross section	0,43
Neutron Mass Absorption	0,00037
Kvantni brojevi	1S0
space group	225 (Fm_3m)

Isotopes of Calcium

Stable Isotopes	3
Unstable Isotopes	26
Natural Isotopes	6

³³Ca

Maseni broj	33
broj neutrona	13
Relative Atomic Mass	33,033312 ± 0,000429 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada
spin	5/2
nuclear quadrupole moment
datum otkrića
parity	+

decay mode	intensity
p (proton emission)

³⁴Ca

Maseni broj	34
broj neutrona	14
Relative Atomic Mass	34,015985 ± 0,000322 Da
g-factor	0
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada
spin	0
nuclear quadrupole moment	0
datum otkrića
parity	+

decay mode	intensity
2p (2-proton emission)

³⁵Ca

Maseni broj	35
broj neutrona	15
Relative Atomic Mass	35,005572 ± 0,000215 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	25,7 ± 0,2 ms
spin	1/2
nuclear quadrupole moment	0
datum otkrića	1985
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
β⁺ p (β⁺-delayed proton emission)	95.8%
2p (2-proton emission)	4.2%

³⁶Ca

Maseni broj	36
broj neutrona	16
Relative Atomic Mass	35,993074388 ± 0,000042941 Da
g-factor	0
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	100,9 ± 1,3 ms
spin	0
nuclear quadrupole moment	0
datum otkrića	1977
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
β⁺ p (β⁺-delayed proton emission)	51.2%

³⁷Ca

Maseni broj	37
broj neutrona	17
Relative Atomic Mass	36,985897849 ± 0,00000068 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	181 ± 0,9 ms
spin	3/2
nuclear quadrupole moment
datum otkrića	1964
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
β⁺ p (β⁺-delayed proton emission)	76.8%

³⁸Ca

Maseni broj	38
broj neutrona	18
Relative Atomic Mass	37,976319223 ± 0,000000208 Da
g-factor	0
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	443,7 ± 0,25 ms
spin	0
nuclear quadrupole moment	0
datum otkrića	1966
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

³⁹Ca

Maseni broj	39
broj neutrona	19
Relative Atomic Mass	38,970710811 ± 0,00000064 Da
g-factor	0,68093333333333 ± 0,00010666666666667
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	860,3 ± 0,8 ms
spin	3/2
nuclear quadrupole moment	0,038 ± 0,003
datum otkrića	1943
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

⁴⁰Ca

Maseni broj	40
broj neutrona	20
Relative Atomic Mass	39,96259085 ± 0,000000022 Da
g-factor	0
natural abundance	96,941 ± 0,156
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada
spin	0
nuclear quadrupole moment	0
datum otkrića	1922
parity	+

decay mode	intensity
2β⁺ (double β⁺ decay)

⁴¹Ca

Maseni broj	41
broj neutrona	21
Relative Atomic Mass	40,962277905 ± 0,000000147 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	99,4 ± 1,5 ky
spin	7/2
nuclear quadrupole moment	-0,0665 ± 0,0018
datum otkrića	1939
parity	-

decay mode	intensity
ϵ (electron capture)	100%

⁴²Ca

Maseni broj	42
broj neutrona	22
Relative Atomic Mass	41,95861778 ± 0,000000159 Da
g-factor	0
natural abundance	0,647 ± 0,023
Radioaktivnost	stable isotope
Vrijeme poluraspada	Not Radioactive ☢️
spin	0
nuclear quadrupole moment	0
datum otkrića	1934
parity	+

⁴³Ca

Maseni broj	43
broj neutrona	23
Relative Atomic Mass	42,958766381 ± 0,000000244 Da
g-factor	-0,37638 ± 0,000017142857142857
natural abundance	0,135 ± 0,01
Radioaktivnost	stable isotope
Vrijeme poluraspada	Not Radioactive ☢️
spin	7/2
nuclear quadrupole moment	-0,0408 ± 0,0008
datum otkrića	1934
parity	-

⁴⁴Ca

Maseni broj	44
broj neutrona	24
Relative Atomic Mass	43,955481489 ± 0,000000348 Da
g-factor	0
natural abundance	2,086 ± 0,11
Radioaktivnost	stable isotope
Vrijeme poluraspada	Not Radioactive ☢️
spin	0
nuclear quadrupole moment	0
datum otkrića	1922
parity	+

⁴⁵Ca

Maseni broj	45
broj neutrona	25
Relative Atomic Mass	44,95618627 ± 0,000000392 Da
g-factor	-0,37897142857143 ± 0,00037142857142857
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	162,61 ± 0,09 d
spin	7/2
nuclear quadrupole moment	0,038 ± 0,012
datum otkrića	1940
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%

⁴⁶Ca

Maseni broj	46
broj neutrona	26
Relative Atomic Mass	45,953687726 ± 0,000002398 Da
g-factor	0
natural abundance	0,004 ± 0,003
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada
spin	0
nuclear quadrupole moment	0
datum otkrića	1938
parity	+

decay mode	intensity
2β⁻ (double β⁻ decay)

⁴⁷Ca

Maseni broj	47
broj neutrona	27
Relative Atomic Mass	46,954541134 ± 0,000002384 Da
g-factor	-0,40182857142857 ± 0,00031428571428571
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	4,536 ± 0,003 d
spin	7/2
nuclear quadrupole moment	0,084 ± 0,006
datum otkrića	1951
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%

⁴⁸Ca

Maseni broj	48
broj neutrona	28
Relative Atomic Mass	47,952522654 ± 0,000000018 Da
g-factor	0
natural abundance	0,187 ± 0,021
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	56 ± 10 Ey
spin	0
nuclear quadrupole moment	0
datum otkrića	1938
parity	+

decay mode	intensity
2β⁻ (double β⁻ decay)
β⁻ (β⁻ decay)

⁴⁹Ca

Maseni broj	49
broj neutrona	29
Relative Atomic Mass	48,955662625 ± 0,00000019 Da
g-factor	-0,91993333333333 ± 0,00053333333333333
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	8,718 ± 0,006 m
spin	3/2
nuclear quadrupole moment	-0,036 ± 0,003
datum otkrića	1950
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%

⁵⁰Ca

Maseni broj	50
broj neutrona	30
Relative Atomic Mass	49,957499215 ± 0,0000017 Da
g-factor	0
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	13,45 ± 0,05 s
spin	0
nuclear quadrupole moment	0
datum otkrića	1964
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

⁵¹Ca

Maseni broj	51
broj neutrona	31
Relative Atomic Mass	50,960995663 ± 0,00000056 Da
g-factor	-0,69973333333333 ± 0,00073333333333333
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	10 ± 0,8 s
spin	3/2
nuclear quadrupole moment	0,036 ± 0,012
datum otkrića	1980
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)

⁵²Ca

Maseni broj	52
broj neutrona	32
Relative Atomic Mass	51,963213646 ± 0,00000072 Da
g-factor	0
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	4,6 ± 0,3 s
spin	0
nuclear quadrupole moment	0
datum otkrića	1985
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	2%

⁵³Ca

Maseni broj	53
broj neutrona	33
Relative Atomic Mass	52,968451 ± 0,000047 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	461 ± 90 ms
spin	1/2
nuclear quadrupole moment	0
datum otkrića	1983
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	40%

⁵⁴Ca

Maseni broj	54
broj neutrona	34
Relative Atomic Mass	53,972989 ± 0,000052 Da
g-factor	0
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	90 ± 6 ms
spin	0
nuclear quadrupole moment	0
datum otkrića	1997
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)
2n (2-neutron emission)

⁵⁵Ca

Maseni broj	55
broj neutrona	35
Relative Atomic Mass	54,979978 ± 0,000172 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	22 ± 2 ms
spin	5/2
nuclear quadrupole moment
datum otkrića	1997
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)
2n (2-neutron emission)

⁵⁶Ca

Maseni broj	56
broj neutrona	36
Relative Atomic Mass	55,985496 ± 0,000268 Da
g-factor	0
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	11 ± 2 ms
spin	0
nuclear quadrupole moment	0
datum otkrića	1997
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)
2n (2-neutron emission)

⁵⁷Ca

Maseni broj	57
broj neutrona	37
Relative Atomic Mass	56,992958 ± 0,000429 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada
spin	5/2
nuclear quadrupole moment
datum otkrića	2009
parity	-

decay mode	intensity
β⁻ (β⁻ decay)
β⁻ n (β⁻-delayed neutron emission)
2n (2-neutron emission)

⁵⁸Ca

Maseni broj	58
broj neutrona	38
Relative Atomic Mass	57,998357 ± 0,000537 Da
g-factor	0
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada
spin	0
nuclear quadrupole moment	0
datum otkrića	2009
parity	+

decay mode	intensity
β⁻ (β⁻ decay)
β⁻ n (β⁻-delayed neutron emission)
2n (2-neutron emission)

⁵⁹Ca

Maseni broj	59
broj neutrona	39
Relative Atomic Mass	59,006237 ± 0,000644 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada
spin	5/2
nuclear quadrupole moment
datum otkrića	2018
parity	-

decay mode	intensity
β⁻ (β⁻ decay)
β⁻ n (β⁻-delayed neutron emission)
2n (2-neutron emission)

⁶⁰Ca

Maseni broj	60
broj neutrona	40
Relative Atomic Mass	60,011809 ± 0,000751 Da
g-factor	0
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada
spin	0
nuclear quadrupole moment	0
datum otkrića	2018
parity	+

decay mode	intensity
β⁻ (β⁻ decay)
β⁻ n (β⁻-delayed neutron emission)
2n (2-neutron emission)

⁶¹Ca

Maseni broj	61
broj neutrona	41
Relative Atomic Mass	61,020408 ± 0,000859 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada
spin	1/2
nuclear quadrupole moment	0
datum otkrića
parity	-

decay mode	intensity
β⁻ (β⁻ decay)
β⁻ n (β⁻-delayed neutron emission)
2n (2-neutron emission)

historija

otkrivač ili izumitelj	Sir Humphrey Davy
mjesto otkrića	England
datum otkrića	1808
Etimologija	Latin: calx, calcis (lime).
pronunciation	KAL-si-em (engleski)

izvor

Abundance
Abundance in Earth's crust	41.500 mg/kg
natural abundance (okean)	412 mg/L
natural abundance (ljudsko tijelo)	1,4 %
natural abundance (Meteoroidi)	1,1 %
natural abundance (Sunce)	0,007 %
Abundance in Universe	0,007 %

Nuclear Screening Constants

1	s	0.527
2	p	3.9586
2	s	6.2236
3	p	11.3417
3	s	10.3985
4	s	15.602

Kalcij[um] on ChemicalAid

Kalcij[um] (Ca)

Physical Property

Chemical Property

other

Isotopes of Calcium

33Ca

34Ca

35Ca

36Ca

37Ca

38Ca

39Ca

40Ca

41Ca

42Ca

43Ca

44Ca

45Ca

46Ca

47Ca

48Ca

49Ca

50Ca

51Ca

52Ca

53Ca

54Ca

55Ca

56Ca

57Ca

58Ca

59Ca

60Ca

61Ca

historija

izvor

Nuclear Screening Constants

³³Ca

³⁴Ca

³⁵Ca

³⁶Ca

³⁷Ca

³⁸Ca

³⁹Ca

⁴⁰Ca

⁴¹Ca

⁴²Ca

⁴³Ca

⁴⁴Ca

⁴⁵Ca

⁴⁶Ca

⁴⁷Ca

⁴⁸Ca

⁴⁹Ca

⁵⁰Ca

⁵¹Ca

⁵²Ca

⁵³Ca

⁵⁴Ca

⁵⁵Ca

⁵⁶Ca

⁵⁷Ca

⁵⁸Ca

⁵⁹Ca

⁶⁰Ca

⁶¹Ca