Kalsiyûm

Kalsiyûm (Ca)

chemical element with symbol Ca and atomic number 20
Atomic Number20
Atomic Weight40.078
Hejmara baristeyî40
Group2
Period4
Blocks
Proton20 p+
Notron20 n0
Kareva20 e-
Animated Bohr model of Ca (Kalsiyûm)

Physical Property

Atomic Radius
180 pm
molar volume
Covalent Radius
171 pm
Metallic Radius
174 pm
ionic radius
100 pm
Crystal Radius
114 pm
Van der Waals radius
231 pm
density
1,54 g/cm³
Atomic Radii Of The Elements: Kalsiyûm0102030405060708090100110120130140150160170180190200210220230240pmAtomic RadiusCovalent RadiusMetallic RadiusVan der Waals radius

Chemical Property

wize
proton affinity
electron affinity
0,02455 eV/particle
ionization energy
6,1131552 eV/particle
ionization energy of Ca (Kalsiyûm)
enthalpy of vaporization
153,6 kJ/mol
enthalpy of fusion
9,2 kJ/mol
standard enthalpy of formation
177,8 kJ/mol
Kareva
electron shell2, 8, 8, 2
Bohr model: Ca (Kalsiyûm)
valence electron2
Lewis structure: Ca (Kalsiyûm)
electron configuration[Ar] 4s2
1s2 2s2 2p6 3s2 3p6 4s2
Enhanced Bohr model of Ca (Kalsiyûm)
Orbital Diagram of Ca (Kalsiyûm)
oxidation number1, 2
electronegativity
1
Electrophilicity Index
0,7734001442996138 eV/particle
fundamental state of matter
phase of matterSolid
gaseous state of matter
Boiling Point
1.757,15 K
Melting Point
1.115,15 K
critical pressure
critical temperature
triple point
appearance
color
Silver
appearance
refractive index
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
typeConductor
electrical conductivity
29 MS/m
electrical resistivity
0,00000003399999999999 m Ω
superconductivity
magnetism
typeparamagnetic
magnetic susceptibility (Mass)
0,0000000138 m³/Kg
magnetic susceptibility (Molar)
0,0000000005531 m³/mol
magnetic susceptibility (Volume)
0,00002139
magnetic ordering
Germahiya Curie
Néel temperature
pêkhate
Crystal StructureFace Centered Cubic (FCC)
lattice constant
5,58 Å
Lattice Anglesπ/2, π/2, π/2
mechanical property
hardness
1,75 MPa
bulk modulus
17 GPa
shear modulus
7,4 GPa
Young's modulus
20 GPa
Poisson's ratio
0,31
Leza dengê
3.810 m/s
classification
CategoryAlkaline earth metals, Alkaline earth metals
CAS GroupIIA
IUPAC GroupIIA
Glawe Number16
Mendeleev Number7
Pettifor Number16
Geochemical Classmajor
Goldschmidt classificationlitophile

other

Gas Basicity
polarizability
160,8 ± 4 a₀
C6 Dispersion Coefficient
2.163 a₀
allotrope
Neutron cross section
0,43
Neutron Mass Absorption
0,00037
quantum number1S0
space group225 (Fm_3m)

Isotopes of Calcium

Stable Isotopes3
Unstable Isotopes26
Natural Isotopes6
Isotopic Composition4096.94%4096.94%442.09%442.09%420.65%420.65%430.14%430.14%460.00%460.00%480.19%480.19%

33Ca

Hejmara baristeyî33
neutron number13
Giraniya atomê
33,033312 ± 0,000429 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê
parity+

decay modeintensity
p (proton emission)

34Ca

Hejmara baristeyî34
neutron number14
Giraniya atomê
34,015985 ± 0,000322 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê
parity+

decay modeintensity
2p (2-proton emission)

35Ca

Hejmara baristeyî35
neutron number15
Giraniya atomê
35,005572 ± 0,000215 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
25,7 ± 0,2 ms
spin1/2
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1985
parity+

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

36Ca

Hejmara baristeyî36
neutron number16
Giraniya atomê
35,993074388 ± 0,000042941 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
100,9 ± 1,3 ms
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1977
parity+

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

37Ca

Hejmara baristeyî37
neutron number17
Giraniya atomê
36,985897849 ± 0,00000068 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
181 ± 0,9 ms
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1964
parity+

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

38Ca

Hejmara baristeyî38
neutron number18
Giraniya atomê
37,976319223 ± 0,000000208 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
443,7 ± 0,25 ms
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1966
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

39Ca

Hejmara baristeyî39
neutron number19
Giraniya atomê
38,970710811 ± 0,00000064 Da
g-factor
0,68093333333333 ± 0,00010666666666667
natural abundance
radioactivity☢️ radioactive element
half-life
860,3 ± 0,8 ms
spin3/2
nuclear quadrupole moment
0,038 ± 0,003
dema îcadkirinê yan keşfê1943
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

40Ca

Hejmara baristeyî40
neutron number20
Giraniya atomê
39,96259085 ± 0,000000022 Da
g-factor
0
natural abundance
96,941 ± 0,156
radioactivity☢️ radioactive element
half-life
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1922
parity+

decay modeintensity
+ (double β+ decay)

41Ca

Hejmara baristeyî41
neutron number21
Giraniya atomê
40,962277905 ± 0,000000147 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
99,4 ± 1,5 ky
spin7/2
nuclear quadrupole moment
-0,0665 ± 0,0018
dema îcadkirinê yan keşfê1939
parity-

decay modeintensity
ϵ (electron capture)100%

42Ca

Hejmara baristeyî42
neutron number22
Giraniya atomê
41,95861778 ± 0,000000159 Da
g-factor
0
natural abundance
0,647 ± 0,023
radioactivitystable isotope
half-lifeNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1934
parity+

43Ca

Hejmara baristeyî43
neutron number23
Giraniya atomê
42,958766381 ± 0,000000244 Da
g-factor
-0,37638 ± 0,000017142857142857
natural abundance
0,135 ± 0,01
radioactivitystable isotope
half-lifeNot Radioactive ☢️
spin7/2
nuclear quadrupole moment
-0,0408 ± 0,0008
dema îcadkirinê yan keşfê1934
parity-

44Ca

Hejmara baristeyî44
neutron number24
Giraniya atomê
43,955481489 ± 0,000000348 Da
g-factor
0
natural abundance
2,086 ± 0,11
radioactivitystable isotope
half-lifeNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1922
parity+

45Ca

Hejmara baristeyî45
neutron number25
Giraniya atomê
44,95618627 ± 0,000000392 Da
g-factor
-0,37897142857143 ± 0,00037142857142857
natural abundance
radioactivity☢️ radioactive element
half-life
162,61 ± 0,09 d
spin7/2
nuclear quadrupole moment
0,038 ± 0,012
dema îcadkirinê yan keşfê1940
parity-

decay modeintensity
β (β decay)100%

46Ca

Hejmara baristeyî46
neutron number26
Giraniya atomê
45,953687726 ± 0,000002398 Da
g-factor
0
natural abundance
0,004 ± 0,003
radioactivity☢️ radioactive element
half-life
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1938
parity+

decay modeintensity
(double β decay)

47Ca

Hejmara baristeyî47
neutron number27
Giraniya atomê
46,954541134 ± 0,000002384 Da
g-factor
-0,40182857142857 ± 0,00031428571428571
natural abundance
radioactivity☢️ radioactive element
half-life
4,536 ± 0,003 d
spin7/2
nuclear quadrupole moment
0,084 ± 0,006
dema îcadkirinê yan keşfê1951
parity-

decay modeintensity
β (β decay)100%

48Ca

Hejmara baristeyî48
neutron number28
Giraniya atomê
47,952522654 ± 0,000000018 Da
g-factor
0
natural abundance
0,187 ± 0,021
radioactivity☢️ radioactive element
half-life
56 ± 10 Ey
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1938
parity+

decay modeintensity
(double β decay)
β (β decay)

49Ca

Hejmara baristeyî49
neutron number29
Giraniya atomê
48,955662625 ± 0,00000019 Da
g-factor
-0,91993333333333 ± 0,00053333333333333
natural abundance
radioactivity☢️ radioactive element
half-life
8,718 ± 0,006 m
spin3/2
nuclear quadrupole moment
-0,036 ± 0,003
dema îcadkirinê yan keşfê1950
parity-

decay modeintensity
β (β decay)100%

50Ca

Hejmara baristeyî50
neutron number30
Giraniya atomê
49,957499215 ± 0,0000017 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
13,45 ± 0,05 s
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1964
parity+

decay modeintensity
β (β decay)100%

51Ca

Hejmara baristeyî51
neutron number31
Giraniya atomê
50,960995663 ± 0,00000056 Da
g-factor
-0,69973333333333 ± 0,00073333333333333
natural abundance
radioactivity☢️ radioactive element
half-life
10 ± 0,8 s
spin3/2
nuclear quadrupole moment
0,036 ± 0,012
dema îcadkirinê yan keşfê1980
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)

52Ca

Hejmara baristeyî52
neutron number32
Giraniya atomê
51,963213646 ± 0,00000072 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
4,6 ± 0,3 s
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1985
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)2%

53Ca

Hejmara baristeyî53
neutron number33
Giraniya atomê
52,968451 ± 0,000047 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
461 ± 90 ms
spin1/2
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1983
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)40%

54Ca

Hejmara baristeyî54
neutron number34
Giraniya atomê
53,972989 ± 0,000052 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
90 ± 6 ms
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1997
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)
2n (2-neutron emission)

55Ca

Hejmara baristeyî55
neutron number35
Giraniya atomê
54,979978 ± 0,000172 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
22 ± 2 ms
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1997
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)
2n (2-neutron emission)

56Ca

Hejmara baristeyî56
neutron number36
Giraniya atomê
55,985496 ± 0,000268 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
11 ± 2 ms
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1997
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)
2n (2-neutron emission)

57Ca

Hejmara baristeyî57
neutron number37
Giraniya atomê
56,992958 ± 0,000429 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê2009
parity-

decay modeintensity
β (β decay)
β n (β-delayed neutron emission)
2n (2-neutron emission)

58Ca

Hejmara baristeyî58
neutron number38
Giraniya atomê
57,998357 ± 0,000537 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê2009
parity+

decay modeintensity
β (β decay)
β n (β-delayed neutron emission)
2n (2-neutron emission)

59Ca

Hejmara baristeyî59
neutron number39
Giraniya atomê
59,006237 ± 0,000644 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê2018
parity-

decay modeintensity
β (β decay)
β n (β-delayed neutron emission)
2n (2-neutron emission)

60Ca

Hejmara baristeyî60
neutron number40
Giraniya atomê
60,011809 ± 0,000751 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê2018
parity+

decay modeintensity
β (β decay)
β n (β-delayed neutron emission)
2n (2-neutron emission)

61Ca

Hejmara baristeyî61
neutron number41
Giraniya atomê
61,020408 ± 0,000859 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin1/2
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê
parity-

decay modeintensity
β (β decay)
β n (β-delayed neutron emission)
2n (2-neutron emission)
Calcium 1

dîrok

kaşîf an îcadkerSir Humphrey Davy
location of discoveryEngland
dema îcadkirinê yan keşfê1808
BêjenasîLatin: calx, calcis (lime).
pronunciationKAL-si-em (îngilîzî)

source

Abundance
Abundance in Earth's crust
41.500 mg/kg
natural abundance (Okyanûs)
412 mg/L
natural abundance (human body)
1,4 %
natural abundance (meteoroid)
1,1 %
natural abundance (Roj)
0,007 %
Abundance in Universe
0,007 %

Nuclear Screening Constants

1s0.527
2p3.9586
2s6.2236
3p11.3417
3s10.3985
4s15.602