Kalcij[um]

Kalcij[um] (Ca)

hemijski element sa simbolom Ca i atomskim brojem 20
Atomic Number20
Atomic Weight40.078
Maseni broj40
Group2
Period4
Blocks
Proton20 p+
Neutron20 n0
Elektron20 e-
Animated Bohrov model atoma of Ca (Kalcij[um])

Physical Property

Atomski Radijus
180 pm
Molarni volumen
covalent radius
171 pm
Metallic Radius
174 pm
Ionski radijus
100 pm
Crystal Radius
114 pm
Van der Waalsov radijus
231 pm
gustoća
1,54 g/cm³
Atomic Radii Of The Elements: Kalcij[um]0102030405060708090100110120130140150160170180190200210220230240pmAtomski RadijusCovalent RadiusMetallic RadiusVan der Waalsov radijus

Chemical Property

energija
proton affinity
electron affinity
0,02455 eV/particle
ionization energy
6,1131552 eV/particle
ionization energy of Ca (Kalcij[um])
Toplota isparavanja
153,6 kJ/mol
toplota topljenja
9,2 kJ/mol
standard enthalpy of formation
177,8 kJ/mol
Elektron
electron shell2, 8, 8, 2
Bohrov model atoma: Ca (Kalcij[um])
Valentni elektron2
Lewis structure: Ca (Kalcij[um])
electron configuration[Ar] 4s2
1s2 2s2 2p6 3s2 3p6 4s2
Enhanced Bohrov model atoma of Ca (Kalcij[um])
Orbital Diagram of Ca (Kalcij[um])
oksidacijsko stanje1, 2
Elektronegativnost
1
Electrophilicity Index
0,7734001442996138 eV/particle
fundamental state of matter
agregatno stanjeSolid
gaseous state of matter
Boiling Point
1.757,15 K
Melting Point
1.115,15 K
critical pressure
Kritična temperatura
Trojna tačka
appearance
boja
Silver
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
typeConductor
Specifična električna provodljivost
29 MS/m
electrical resistivity
0,00000003399999999999 m Ω
Superprovodljivost
Magnetizam
typeparamagnetic
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 StructureFace Centered Cubic (FCC)
lattice constant
5,58 Å
Lattice Anglesπ/2, π/2, π/2
mechanical property
Tvrdoća
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
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
Kvantni brojevi1S0
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

Maseni broj33
broj neutrona13
relative atomic mass
33,033312 ± 0,000429 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
spin5/2
nuclear quadrupole moment
datum otkrića
parity+

decay modeintensity
p (proton emission)

34Ca

Maseni broj34
broj neutrona14
relative atomic mass
34,015985 ± 0,000322 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
spin0
nuclear quadrupole moment
0
datum otkrića
parity+

decay modeintensity
2p (2-proton emission)

35Ca

Maseni broj35
broj neutrona15
relative atomic mass
35,005572 ± 0,000215 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
25,7 ± 0,2 ms
spin1/2
nuclear quadrupole moment
0
datum otkrića1985
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

Maseni broj36
broj neutrona16
relative atomic mass
35,993074388 ± 0,000042941 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
100,9 ± 1,3 ms
spin0
nuclear quadrupole moment
0
datum otkrića1977
parity+

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

37Ca

Maseni broj37
broj neutrona17
relative atomic mass
36,985897849 ± 0,00000068 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
181 ± 0,9 ms
spin3/2
nuclear quadrupole moment
datum otkrića1964
parity+

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

38Ca

Maseni broj38
broj neutrona18
relative atomic mass
37,976319223 ± 0,000000208 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
443,7 ± 0,25 ms
spin0
nuclear quadrupole moment
0
datum otkrića1966
parity+

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

39Ca

Maseni broj39
broj neutrona19
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
spin3/2
nuclear quadrupole moment
0,038 ± 0,003
datum otkrića1943
parity+

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

40Ca

Maseni broj40
broj neutrona20
relative atomic mass
39,96259085 ± 0,000000022 Da
g-factor
0
natural abundance
96,941 ± 0,156
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
spin0
nuclear quadrupole moment
0
datum otkrića1922
parity+

decay modeintensity
+ (double β+ decay)

41Ca

Maseni broj41
broj neutrona21
relative atomic mass
40,962277905 ± 0,000000147 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
99,4 ± 1,5 ky
spin7/2
nuclear quadrupole moment
-0,0665 ± 0,0018
datum otkrića1939
parity-

decay modeintensity
ϵ (electron capture)100%

42Ca

Maseni broj42
broj neutrona22
relative atomic mass
41,95861778 ± 0,000000159 Da
g-factor
0
natural abundance
0,647 ± 0,023
Radioaktivnoststable isotope
Vrijeme poluraspadaNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
datum otkrića1934
parity+

43Ca

Maseni broj43
broj neutrona23
relative atomic mass
42,958766381 ± 0,000000244 Da
g-factor
-0,37638 ± 0,000017142857142857
natural abundance
0,135 ± 0,01
Radioaktivnoststable isotope
Vrijeme poluraspadaNot Radioactive ☢️
spin7/2
nuclear quadrupole moment
-0,0408 ± 0,0008
datum otkrića1934
parity-

44Ca

Maseni broj44
broj neutrona24
relative atomic mass
43,955481489 ± 0,000000348 Da
g-factor
0
natural abundance
2,086 ± 0,11
Radioaktivnoststable isotope
Vrijeme poluraspadaNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
datum otkrića1922
parity+

45Ca

Maseni broj45
broj neutrona25
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
spin7/2
nuclear quadrupole moment
0,038 ± 0,012
datum otkrića1940
parity-

decay modeintensity
β (β decay)100%

46Ca

Maseni broj46
broj neutrona26
relative atomic mass
45,953687726 ± 0,000002398 Da
g-factor
0
natural abundance
0,004 ± 0,003
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
spin0
nuclear quadrupole moment
0
datum otkrića1938
parity+

decay modeintensity
(double β decay)

47Ca

Maseni broj47
broj neutrona27
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
spin7/2
nuclear quadrupole moment
0,084 ± 0,006
datum otkrića1951
parity-

decay modeintensity
β (β decay)100%

48Ca

Maseni broj48
broj neutrona28
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
spin0
nuclear quadrupole moment
0
datum otkrića1938
parity+

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

49Ca

Maseni broj49
broj neutrona29
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
spin3/2
nuclear quadrupole moment
-0,036 ± 0,003
datum otkrića1950
parity-

decay modeintensity
β (β decay)100%

50Ca

Maseni broj50
broj neutrona30
relative atomic mass
49,957499215 ± 0,0000017 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
13,45 ± 0,05 s
spin0
nuclear quadrupole moment
0
datum otkrića1964
parity+

decay modeintensity
β (β decay)100%

51Ca

Maseni broj51
broj neutrona31
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
spin3/2
nuclear quadrupole moment
0,036 ± 0,012
datum otkrića1980
parity-

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

52Ca

Maseni broj52
broj neutrona32
relative atomic mass
51,963213646 ± 0,00000072 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
4,6 ± 0,3 s
spin0
nuclear quadrupole moment
0
datum otkrića1985
parity+

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

53Ca

Maseni broj53
broj neutrona33
relative atomic mass
52,968451 ± 0,000047 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
461 ± 90 ms
spin1/2
nuclear quadrupole moment
0
datum otkrića1983
parity-

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

54Ca

Maseni broj54
broj neutrona34
relative atomic mass
53,972989 ± 0,000052 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
90 ± 6 ms
spin0
nuclear quadrupole moment
0
datum otkrića1997
parity+

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

55Ca

Maseni broj55
broj neutrona35
relative atomic mass
54,979978 ± 0,000172 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
22 ± 2 ms
spin5/2
nuclear quadrupole moment
datum otkrića1997
parity-

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

56Ca

Maseni broj56
broj neutrona36
relative atomic mass
55,985496 ± 0,000268 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
11 ± 2 ms
spin0
nuclear quadrupole moment
0
datum otkrića1997
parity+

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

57Ca

Maseni broj57
broj neutrona37
relative atomic mass
56,992958 ± 0,000429 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
spin5/2
nuclear quadrupole moment
datum otkrića2009
parity-

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

58Ca

Maseni broj58
broj neutrona38
relative atomic mass
57,998357 ± 0,000537 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
spin0
nuclear quadrupole moment
0
datum otkrića2009
parity+

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

59Ca

Maseni broj59
broj neutrona39
relative atomic mass
59,006237 ± 0,000644 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
spin5/2
nuclear quadrupole moment
datum otkrića2018
parity-

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

60Ca

Maseni broj60
broj neutrona40
relative atomic mass
60,011809 ± 0,000751 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
spin0
nuclear quadrupole moment
0
datum otkrića2018
parity+

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

61Ca

Maseni broj61
broj neutrona41
relative atomic mass
61,020408 ± 0,000859 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
spin1/2
nuclear quadrupole moment
0
datum otkrića
parity-

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

historija

otkrivač ili izumiteljSir Humphrey Davy
mjesto otkrićaEngland
datum otkrića1808
EtimologijaLatin: calx, calcis (lime).
pronunciationKAL-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

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