Calci

Calci (Ca)

chemical element with symbol Ca and atomic number 20
Atomic Number20
Atomic Weight40.078
mass number40
Group2
Period4
Blocks
proton20 p+
neutron20 n0
electron20 e-
Animated Bohr model of Ca (Calci)

Proprietat Fisica

Rai Atomic
molar volume
covalent radius
Metallic Radius
ionic radius
Crystal Radius
Rai de van der Waals
densitat
Atomic Radii Of The Elements: Calci0102030405060708090100110120130140150160170180190200210220230240pmRai AtomicCovalent RadiusMetallic RadiusRai de van der Waals

Chemical Property

energia
proton affinity
electron affinity
ionization energy
ionization energy of Ca (Calci)
enthalpy of vaporization
enthalpy of fusion
standard enthalpy of formation
electron
electron shell2, 8, 8, 2
Bohr model: Ca (Calci)
valence electron2
Lewis structure: Ca (Calci)
electron configuration[Ar] 4s2
1s2 2s2 2p6 3s2 3p6 4s2
Enhanced Bohr model of Ca (Calci)
Orbital Diagram of Ca (Calci)
oxidation number1, 2
Electronegativitat
1
Electrophilicity Index
fundamental state of matter
estat de la matèriaSolid
gaseous state of matter
Boiling Point
Melting Point
critical pressure
critical temperature
Ponch triple
appearance
Color
Silver
appearance
Indici de refraccion
thermodynamic material property
Thermal Conductivity
thermal expansion
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
typeConductor
electrical conductivity
electrical resistivity
superconductivity
magnetism
typeparamagnetic
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
estructura
Crystal StructureFace Centered Cubic (FCC)
lattice constant
Lattice Anglesπ/2, π/2, π/2
mechanical property
Duretat
bulk modulus
shear modulus
Young's modulus
Poisson's ratio
0.31
speed of sound
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
C6 Dispersion Coefficient
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

mass number33
neutron number13
Relative Atomic Mass
g-factor
natural abundance
Radioactivitat☢️ radioactive element
Semivida
Espin5/2
nuclear quadrupole moment
data de descobèrta
parity+

decay modeintensity
p (proton emission)

34Ca

mass number34
neutron number14
Relative Atomic Mass
g-factor
0
natural abundance
Radioactivitat☢️ radioactive element
Semivida
Espin0
nuclear quadrupole moment
0
data de descobèrta
parity+

decay modeintensity
2p (2-proton emission)

35Ca

mass number35
neutron number15
Relative Atomic Mass
g-factor
natural abundance
Radioactivitat☢️ radioactive element
Semivida
25.7 ± 0.2 ms
Espin1/2
nuclear quadrupole moment
0
data de descobèrta1985
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

mass number36
neutron number16
Relative Atomic Mass
g-factor
0
natural abundance
Radioactivitat☢️ radioactive element
Semivida
100.9 ± 1.3 ms
Espin0
nuclear quadrupole moment
0
data de descobèrta1977
parity+

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

37Ca

mass number37
neutron number17
Relative Atomic Mass
g-factor
natural abundance
Radioactivitat☢️ radioactive element
Semivida
181 ± 0.9 ms
Espin3/2
nuclear quadrupole moment
data de descobèrta1964
parity+

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

38Ca

mass number38
neutron number18
Relative Atomic Mass
g-factor
0
natural abundance
Radioactivitat☢️ radioactive element
Semivida
443.7 ± 0.25 ms
Espin0
nuclear quadrupole moment
0
data de descobèrta1966
parity+

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

39Ca

mass number39
neutron number19
Relative Atomic Mass
g-factor
0.68093333333333 ± 0.00010666666666667
natural abundance
Radioactivitat☢️ radioactive element
Semivida
860.3 ± 0.8 ms
Espin3/2
nuclear quadrupole moment
0.038 ± 0.003
data de descobèrta1943
parity+

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

40Ca

mass number40
neutron number20
Relative Atomic Mass
g-factor
0
natural abundance
96.941 ± 0.156
Radioactivitat☢️ radioactive element
Semivida
Espin0
nuclear quadrupole moment
0
data de descobèrta1922
parity+

decay modeintensity
+ (double β+ decay)

41Ca

mass number41
neutron number21
Relative Atomic Mass
g-factor
natural abundance
Radioactivitat☢️ radioactive element
Semivida
99.4 ± 1.5 ky
Espin7/2
nuclear quadrupole moment
-0.0665 ± 0.0018
data de descobèrta1939
parity-

decay modeintensity
ϵ (electron capture)100%

42Ca

mass number42
neutron number22
Relative Atomic Mass
g-factor
0
natural abundance
0.647 ± 0.023
Radioactivitatstable isotope
SemividaNot Radioactive ☢️
Espin0
nuclear quadrupole moment
0
data de descobèrta1934
parity+

43Ca

mass number43
neutron number23
Relative Atomic Mass
g-factor
-0.37638 ± 0.000017142857142857
natural abundance
0.135 ± 0.01
Radioactivitatstable isotope
SemividaNot Radioactive ☢️
Espin7/2
nuclear quadrupole moment
-0.0408 ± 0.0008
data de descobèrta1934
parity-

44Ca

mass number44
neutron number24
Relative Atomic Mass
g-factor
0
natural abundance
2.086 ± 0.11
Radioactivitatstable isotope
SemividaNot Radioactive ☢️
Espin0
nuclear quadrupole moment
0
data de descobèrta1922
parity+

45Ca

mass number45
neutron number25
Relative Atomic Mass
g-factor
-0.37897142857143 ± 0.00037142857142857
natural abundance
Radioactivitat☢️ radioactive element
Semivida
162.61 ± 0.09 d
Espin7/2
nuclear quadrupole moment
0.038 ± 0.012
data de descobèrta1940
parity-

decay modeintensity
β (β decay)100%

46Ca

mass number46
neutron number26
Relative Atomic Mass
g-factor
0
natural abundance
0.004 ± 0.003
Radioactivitat☢️ radioactive element
Semivida
Espin0
nuclear quadrupole moment
0
data de descobèrta1938
parity+

decay modeintensity
(double β decay)

47Ca

mass number47
neutron number27
Relative Atomic Mass
g-factor
-0.40182857142857 ± 0.00031428571428571
natural abundance
Radioactivitat☢️ radioactive element
Semivida
4.536 ± 0.003 d
Espin7/2
nuclear quadrupole moment
0.084 ± 0.006
data de descobèrta1951
parity-

decay modeintensity
β (β decay)100%

48Ca

mass number48
neutron number28
Relative Atomic Mass
g-factor
0
natural abundance
0.187 ± 0.021
Radioactivitat☢️ radioactive element
Semivida
56 ± 10 Ey
Espin0
nuclear quadrupole moment
0
data de descobèrta1938
parity+

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

49Ca

mass number49
neutron number29
Relative Atomic Mass
g-factor
-0.91993333333333 ± 0.00053333333333333
natural abundance
Radioactivitat☢️ radioactive element
Semivida
8.718 ± 0.006 m
Espin3/2
nuclear quadrupole moment
-0.036 ± 0.003
data de descobèrta1950
parity-

decay modeintensity
β (β decay)100%

50Ca

mass number50
neutron number30
Relative Atomic Mass
g-factor
0
natural abundance
Radioactivitat☢️ radioactive element
Semivida
13.45 ± 0.05 s
Espin0
nuclear quadrupole moment
0
data de descobèrta1964
parity+

decay modeintensity
β (β decay)100%

51Ca

mass number51
neutron number31
Relative Atomic Mass
g-factor
-0.69973333333333 ± 0.00073333333333333
natural abundance
Radioactivitat☢️ radioactive element
Semivida
10 ± 0.8 s
Espin3/2
nuclear quadrupole moment
0.036 ± 0.012
data de descobèrta1980
parity-

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

52Ca

mass number52
neutron number32
Relative Atomic Mass
g-factor
0
natural abundance
Radioactivitat☢️ radioactive element
Semivida
4.6 ± 0.3 s
Espin0
nuclear quadrupole moment
0
data de descobèrta1985
parity+

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

53Ca

mass number53
neutron number33
Relative Atomic Mass
g-factor
natural abundance
Radioactivitat☢️ radioactive element
Semivida
461 ± 90 ms
Espin1/2
nuclear quadrupole moment
0
data de descobèrta1983
parity-

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

54Ca

mass number54
neutron number34
Relative Atomic Mass
g-factor
0
natural abundance
Radioactivitat☢️ radioactive element
Semivida
90 ± 6 ms
Espin0
nuclear quadrupole moment
0
data de descobèrta1997
parity+

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

55Ca

mass number55
neutron number35
Relative Atomic Mass
g-factor
natural abundance
Radioactivitat☢️ radioactive element
Semivida
22 ± 2 ms
Espin5/2
nuclear quadrupole moment
data de descobèrta1997
parity-

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

56Ca

mass number56
neutron number36
Relative Atomic Mass
g-factor
0
natural abundance
Radioactivitat☢️ radioactive element
Semivida
11 ± 2 ms
Espin0
nuclear quadrupole moment
0
data de descobèrta1997
parity+

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

57Ca

mass number57
neutron number37
Relative Atomic Mass
g-factor
natural abundance
Radioactivitat☢️ radioactive element
Semivida
Espin5/2
nuclear quadrupole moment
data de descobèrta2009
parity-

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

58Ca

mass number58
neutron number38
Relative Atomic Mass
g-factor
0
natural abundance
Radioactivitat☢️ radioactive element
Semivida
Espin0
nuclear quadrupole moment
0
data de descobèrta2009
parity+

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

59Ca

mass number59
neutron number39
Relative Atomic Mass
g-factor
natural abundance
Radioactivitat☢️ radioactive element
Semivida
Espin5/2
nuclear quadrupole moment
data de descobèrta2018
parity-

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

60Ca

mass number60
neutron number40
Relative Atomic Mass
g-factor
0
natural abundance
Radioactivitat☢️ radioactive element
Semivida
Espin0
nuclear quadrupole moment
0
data de descobèrta2018
parity+

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

61Ca

mass number61
neutron number41
Relative Atomic Mass
g-factor
natural abundance
Radioactivitat☢️ radioactive element
Semivida
Espin1/2
nuclear quadrupole moment
0
data de descobèrta
parity-

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

istòria

descobridor o inventaireSir Humphrey Davy
luòc de descobèrtaEngland
data de descobèrta1808
EtimologiaLatin: calx, calcis (lime).
pronunciationKAL-si-em (English)

source

Abundance
Abundance in Earth's crust
natural abundance (Ocean)
natural abundance (còs uman)
1.4 %
natural abundance (meteoroid)
1.1 %
natural abundance (Solelh)
0.007 %
Abundance in Universe
0.007 %

Nuclear Screening Constants

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