Kalcijs (Ca)

ķīmiskais elements ar atomskaitli 20

Atomic Number	20
Atomic Weight	40.078
Masas skaitlis	40

Group	2
Period	4
Block	s

protons	20 p⁺
neitrons	20 n⁰
elektrons	20 e^-

Animated Bora atoma struktūras modelis of Ca (Kalcijs)

Fizikāla Īpašība

Atoma Rādiuss	180 pm 270 pm
molar volume	29,9 cm³/mol
Covalent Radius	171 pm 147 pm 133 pm 170 pm 176 pm
Metallic Radius	174 pm 197 pm
ionic radius	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 Waals radius	240 pm 231 pm 281 pm 231 pm 339,9 pm
blīvums	1,54 g/cm³ 1 378 kg/m³

Chemical Property

enerģija

proton affinity
Elektrontieksme	0,02455 eV/particle
jonizācijas potenciāls	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

enthalpy of vaporization	153,6 kJ/mol
enthalpy of fusion	9,2 kJ/mol
standard enthalpy of formation	177,8 kJ/mol
elektrons

electron shell	2, 8, 8, 2

vērtības elektrons	2 ⓘ

elektronu konfigurācija	[Ar] 4s²ⓘ 1s² 2s² 2p⁶ 3s² 3p⁶ 4s²

Oksidēšanas pakāpe	1, 2
elektronegativitāte	6,113 eV/particle 0.1154119 1
Electrophilicity Index	0,7734001442996138 eV/particle
fundamentālais agregātstāvoklis

agregātstāvoklis	Solid
gaseous state of matter
Boiling Point	1 757,15 K
Melting Point	1 115,15 K
critical pressure
critical temperature
trīskāršais punkts
appearance
krāsa	Silver #808090 #3dff00 #3dff00
appearance
Laušanas koeficients
thermodynamic material property
Thermal Conductivity
Termiskā izplešanās	0,0000223 1/K
Molārā siltumietilpība	25,929 J/(mol K)
Specific Heat Capacity	0,647 J/(g⋅K)
heat capacity ratio
electrical properties
type	Conductor
electrical conductivity	29 MS/m
īpatnējā pretestība	0,00000003399999999999 Ω*m
Supravadītspēja
Magnētisms
type	paramagnetic
magnetic susceptibility (Mass)	0,0000000138 m³/Kg
magnetic susceptibility (Molar)	0,0000000005531 m³/mol
magnetic susceptibility (Volume)	0,00002139
magnetic ordering
Curie temperature
Néel temperature
struktūra
Crystal Structure	Face Centered Cubic (FCC)
lattice constant	5,58 Å
Lattice Angles	π/2, π/2, π/2
mechanical property
Cietība	167 MPa 1,75 MPa
tilpuma elastības modulis	17 GPa
shear modulus	7,4 GPa
Junga modulis	20 GPa
Poisson's ratio	0,31
skaņas ātrums	3 810 m/s
klasifikācija
Category	Alkaline earth metals, 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
quantum number	1S0
space group	225 (Fm_3m)

Isotopes of Calcium

Stable Isotopes	3
Unstable Isotopes	26
Natural Isotopes	6

³³Ca

Masas skaitlis	33
neutron number	13
Relative Atomic Mass	33,033312 ± 0,000429 Da
g-factor
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods
spins	5/2
nuclear quadrupole moment
atklāšanas datums
parity	+

decay mode	intensity
p (proton emission)

³⁴Ca

Masas skaitlis	34
neutron number	14
Relative Atomic Mass	34,015985 ± 0,000322 Da
g-factor	0
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods
spins	0
nuclear quadrupole moment	0
atklāšanas datums
parity	+

decay mode	intensity
2p (2-proton emission)

³⁵Ca

Masas skaitlis	35
neutron number	15
Relative Atomic Mass	35,005572 ± 0,000215 Da
g-factor
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods	25,7 ± 0,2 ms
spins	1/2
nuclear quadrupole moment	0
atklāšanas datums	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

Masas skaitlis	36
neutron number	16
Relative Atomic Mass	35,993074388 ± 0,000042941 Da
g-factor	0
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods	100,9 ± 1,3 ms
spins	0
nuclear quadrupole moment	0
atklāšanas datums	1977
parity	+

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

³⁷Ca

Masas skaitlis	37
neutron number	17
Relative Atomic Mass	36,985897849 ± 0,00000068 Da
g-factor
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods	181 ± 0,9 ms
spins	3/2
nuclear quadrupole moment
atklāšanas datums	1964
parity	+

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

³⁸Ca

Masas skaitlis	38
neutron number	18
Relative Atomic Mass	37,976319223 ± 0,000000208 Da
g-factor	0
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods	443,7 ± 0,25 ms
spins	0
nuclear quadrupole moment	0
atklāšanas datums	1966
parity	+

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

³⁹Ca

Masas skaitlis	39
neutron number	19
Relative Atomic Mass	38,970710811 ± 0,00000064 Da
g-factor	0,68093333333333 ± 0,00010666666666667
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods	860,3 ± 0,8 ms
spins	3/2
nuclear quadrupole moment	0,038 ± 0,003
atklāšanas datums	1943
parity	+

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

⁴⁰Ca

Masas skaitlis	40
neutron number	20
Relative Atomic Mass	39,96259085 ± 0,000000022 Da
g-factor	0
natural abundance	96,941 ± 0,156
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods
spins	0
nuclear quadrupole moment	0
atklāšanas datums	1922
parity	+

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

⁴¹Ca

Masas skaitlis	41
neutron number	21
Relative Atomic Mass	40,962277905 ± 0,000000147 Da
g-factor
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods	99,4 ± 1,5 ky
spins	7/2
nuclear quadrupole moment	-0,0665 ± 0,0018
atklāšanas datums	1939
parity	-

decay mode	intensity
ϵ (electron capture)	100%

⁴²Ca

Masas skaitlis	42
neutron number	22
Relative Atomic Mass	41,95861778 ± 0,000000159 Da
g-factor	0
natural abundance	0,647 ± 0,023
radioaktivitāte	stable isotope
Pussabrukšanas periods	Not Radioactive ☢️
spins	0
nuclear quadrupole moment	0
atklāšanas datums	1934
parity	+

⁴³Ca

Masas skaitlis	43
neutron number	23
Relative Atomic Mass	42,958766381 ± 0,000000244 Da
g-factor	-0,37638 ± 0,000017142857142857
natural abundance	0,135 ± 0,01
radioaktivitāte	stable isotope
Pussabrukšanas periods	Not Radioactive ☢️
spins	7/2
nuclear quadrupole moment	-0,0408 ± 0,0008
atklāšanas datums	1934
parity	-

⁴⁴Ca

Masas skaitlis	44
neutron number	24
Relative Atomic Mass	43,955481489 ± 0,000000348 Da
g-factor	0
natural abundance	2,086 ± 0,11
radioaktivitāte	stable isotope
Pussabrukšanas periods	Not Radioactive ☢️
spins	0
nuclear quadrupole moment	0
atklāšanas datums	1922
parity	+

⁴⁵Ca

Masas skaitlis	45
neutron number	25
Relative Atomic Mass	44,95618627 ± 0,000000392 Da
g-factor	-0,37897142857143 ± 0,00037142857142857
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods	162,61 ± 0,09 d
spins	7/2
nuclear quadrupole moment	0,038 ± 0,012
atklāšanas datums	1940
parity	-

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

⁴⁶Ca

Masas skaitlis	46
neutron number	26
Relative Atomic Mass	45,953687726 ± 0,000002398 Da
g-factor	0
natural abundance	0,004 ± 0,003
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods
spins	0
nuclear quadrupole moment	0
atklāšanas datums	1938
parity	+

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

⁴⁷Ca

Masas skaitlis	47
neutron number	27
Relative Atomic Mass	46,954541134 ± 0,000002384 Da
g-factor	-0,40182857142857 ± 0,00031428571428571
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods	4,536 ± 0,003 d
spins	7/2
nuclear quadrupole moment	0,084 ± 0,006
atklāšanas datums	1951
parity	-

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

⁴⁸Ca

Masas skaitlis	48
neutron number	28
Relative Atomic Mass	47,952522654 ± 0,000000018 Da
g-factor	0
natural abundance	0,187 ± 0,021
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods	56 ± 10 Ey
spins	0
nuclear quadrupole moment	0
atklāšanas datums	1938
parity	+

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

⁴⁹Ca

Masas skaitlis	49
neutron number	29
Relative Atomic Mass	48,955662625 ± 0,00000019 Da
g-factor	-0,91993333333333 ± 0,00053333333333333
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods	8,718 ± 0,006 m
spins	3/2
nuclear quadrupole moment	-0,036 ± 0,003
atklāšanas datums	1950
parity	-

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

⁵⁰Ca

Masas skaitlis	50
neutron number	30
Relative Atomic Mass	49,957499215 ± 0,0000017 Da
g-factor	0
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods	13,45 ± 0,05 s
spins	0
nuclear quadrupole moment	0
atklāšanas datums	1964
parity	+

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

⁵¹Ca

Masas skaitlis	51
neutron number	31
Relative Atomic Mass	50,960995663 ± 0,00000056 Da
g-factor	-0,69973333333333 ± 0,00073333333333333
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods	10 ± 0,8 s
spins	3/2
nuclear quadrupole moment	0,036 ± 0,012
atklāšanas datums	1980
parity	-

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

⁵²Ca

Masas skaitlis	52
neutron number	32
Relative Atomic Mass	51,963213646 ± 0,00000072 Da
g-factor	0
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods	4,6 ± 0,3 s
spins	0
nuclear quadrupole moment	0
atklāšanas datums	1985
parity	+

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

⁵³Ca

Masas skaitlis	53
neutron number	33
Relative Atomic Mass	52,968451 ± 0,000047 Da
g-factor
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods	461 ± 90 ms
spins	1/2
nuclear quadrupole moment	0
atklāšanas datums	1983
parity	-

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

⁵⁴Ca

Masas skaitlis	54
neutron number	34
Relative Atomic Mass	53,972989 ± 0,000052 Da
g-factor	0
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods	90 ± 6 ms
spins	0
nuclear quadrupole moment	0
atklāšanas datums	1997
parity	+

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

⁵⁵Ca

Masas skaitlis	55
neutron number	35
Relative Atomic Mass	54,979978 ± 0,000172 Da
g-factor
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods	22 ± 2 ms
spins	5/2
nuclear quadrupole moment
atklāšanas datums	1997
parity	-

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

⁵⁶Ca

Masas skaitlis	56
neutron number	36
Relative Atomic Mass	55,985496 ± 0,000268 Da
g-factor	0
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods	11 ± 2 ms
spins	0
nuclear quadrupole moment	0
atklāšanas datums	1997
parity	+

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

⁵⁷Ca

Masas skaitlis	57
neutron number	37
Relative Atomic Mass	56,992958 ± 0,000429 Da
g-factor
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods
spins	5/2
nuclear quadrupole moment
atklāšanas datums	2009
parity	-

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

⁵⁸Ca

Masas skaitlis	58
neutron number	38
Relative Atomic Mass	57,998357 ± 0,000537 Da
g-factor	0
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods
spins	0
nuclear quadrupole moment	0
atklāšanas datums	2009
parity	+

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

⁵⁹Ca

Masas skaitlis	59
neutron number	39
Relative Atomic Mass	59,006237 ± 0,000644 Da
g-factor
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods
spins	5/2
nuclear quadrupole moment
atklāšanas datums	2018
parity	-

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

⁶⁰Ca

Masas skaitlis	60
neutron number	40
Relative Atomic Mass	60,011809 ± 0,000751 Da
g-factor	0
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods
spins	0
nuclear quadrupole moment	0
atklāšanas datums	2018
parity	+

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

⁶¹Ca

Masas skaitlis	61
neutron number	41
Relative Atomic Mass	61,020408 ± 0,000859 Da
g-factor
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods
spins	1/2
nuclear quadrupole moment	0
atklāšanas datums
parity	-

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

vēsture

atklājējs vai izgudrotājs	Sir Humphrey Davy
atraduma atrašanās vieta	England
atklāšanas datums	1808
Etimoloģija	Latin: calx, calcis (lime).
izruna	KAL-si-em (angļu)

avots

Abundance
Abundance in Earth's crust	41 500 mg/kg
natural abundance (okeāns)	412 mg/L
natural abundance (cilvēka ķermenis)	1,4 %
natural abundance (meteoroīds)	1,1 %
natural abundance (Saule)	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

Kalcijs on ChemicalAid

AAT ID	300264232
AGROVOC ID	c_1196
Austrālijas Izglītības vārdnīcas identifikators	scot/3064
BNCF	8953
BNE identifikators	XX531346
BNF kods	11976285h
Basque Vikidia ID	Kaltzio
Brockhaus Enzyklopädie online ID	calcium-20
CAS reģistrācijas numurs	7440-70-2
ChEBI ID	22984
ChemSpider ID	4573905
DSSTOX compound identifier	DTXCID40876145
DSSTox identifikators	DTXSID9050484
Den Store Danske ID	calcium
Drugbank ID	01373
ECHA Substance Infocard ID	100.028.344
Enciklopēdijas "Krugosvet" raksts	nauka_i_tehnika/himiya/KALTSI.html
Encyclopedia of China ID (Second Edition)	203125
Encyclopædia Britannica tiešsaistes ID	science/calcium
Encyclopædia Britannica tiešsaistes ID	science/calcium-ion
Encyclopædia Universalis ID	calcium
EuroVoc ID	5304
Freebase identifikators	/m/025tkqy
French Vikidia ID	Calcium
GND identifikators	4069806-3
Golden ID	Calcium-JG5E
HSDB ID	273
ICSC ID	1192
InChI	InChI=1S/Ca
InChIKey	OYPRJOBELJOOCE-UHFFFAOYSA-N
KBpedia ID	Calcium
KEGG ID	C00076
Katalāņu Lielās enciklopēdijas kods	0087196
Katalāņu Lielās enciklopēdijas kods	0013023
Krievijas Lielās enciklopēdijas tiešsaistes kods	2037432
LCCN identifikators	sh85018768
Latvijas Nacionālās enciklopēdijas tiešsaistes ID	139701
MeSH ID	D002118
NALT ID	6421
NDF-RT ID	N0000146031
NDL identifikators	00565069
NE.se ID	kalcium
NKC identifikators	ph116664
NYT temata ID	subject/calcium
Namuwiki ID	칼슘
National Library of Israel J9U ID	987007293780405171
OmegaWiki definētā nozīme	471
OpenAlex ID	C2910173204
OpenAlex ID	C519063684
PSH ID	5752
PatientsLikeMe treatment ID	calcium
Probes And Drugs ID	PD051696
PubChem ID (CID)	5460341
Quora temata ID	Calcium
RxNorm ID	1895
Spanish Vikidia ID	Calcio
Store medisinske leksikon ID	kalsium
Store medisinske leksikon ID	kalsium_-_fysiologi
Store norske leksikon ID	kalsium
Treccani ID	calcio
UK Archival Thesaurus ID	f2/mt225/4347/702
UK Parliament thesaurus ID	8918
UMLS CUI	C0006675
UNESCO Thesaurus ID	concept4508
UNII	SY7Q814VUP
USGS Thesaurus ID	1418
WordNet 3.1 Synset ID	14656826-n
YSO ID	1852
ZVG number	8160
Zhihu topic ID	19668568

Kalcijs (Ca)

Fizikāla Īpašība

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

vēsture

avots

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