Kalcium

Kalcium (Ca)

chemical element with symbol Ca and atomic number 20
Atomic Number20
Atomic Weight40.078
Numri i masës40
Group2
Period4
Blocks
protoni20 p+
neutroni20 n0
elektroni20 e-
Animated Bohr model of Ca (Kalcium)

Tipar Fizik

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: Kalcium0102030405060708090100110120130140150160170180190200210220230240pmAtomic RadiusCovalent RadiusMetallic RadiusVan der Waals radius

Chemical Property

energjia
proton affinity
electron affinity
0,02455 eV/particle
ionization energy
6,1131552 eV/particle
ionization energy of Ca (Kalcium)
enthalpy of vaporization
153,6 kJ/mol
enthalpy of fusion
9,2 kJ/mol
standard enthalpy of formation
177,8 kJ/mol
elektroni
electron shell2, 8, 8, 2
Bohr model: Ca (Kalcium)
valence electron2
Lewis structure: Ca (Kalcium)
konfigurimi i elektronit[Ar] 4s2
1s2 2s2 2p6 3s2 3p6 4s2
Enhanced Bohr model of Ca (Kalcium)
Orbital Diagram of Ca (Kalcium)
oxidation number1, 2
Elektronegativiteti
1
Electrophilicity Index
0,7734001442996138 eV/particle
fundamental state of matter
gjendja agregate e materiesSolid
gaseous state of matter
Boiling Point
1 757,15 K
Melting Point
1 115,15 K
critical pressure
critical temperature
triple point
appearance
Ngjyra
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
Superpërcjellshmëria
Magnetizimi
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
strukturë
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
Shpejtësia e zërit
3 810 m/s
klasifikim
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
numër kuantik1S0
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

Numri i masës33
numri i neutroneve13
relative atomic mass
33,033312 ± 0,000429 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
Spini5/2
nuclear quadrupole moment
koha e zbulimit apo shpikjes
parity+

decay modeintensitet
p (proton emission)

34Ca

Numri i masës34
numri i neutroneve14
relative atomic mass
34,015985 ± 0,000322 Da
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes
parity+

decay modeintensitet
2p (2-proton emission)

35Ca

Numri i masës35
numri i neutroneve15
relative atomic mass
35,005572 ± 0,000215 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
25,7 ± 0,2 ms
Spini1/2
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1985
parity+

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

36Ca

Numri i masës36
numri i neutroneve16
relative atomic mass
35,993074388 ± 0,000042941 Da
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
100,9 ± 1,3 ms
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1977
parity+

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

37Ca

Numri i masës37
numri i neutroneve17
relative atomic mass
36,985897849 ± 0,00000068 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
181 ± 0,9 ms
Spini3/2
nuclear quadrupole moment
koha e zbulimit apo shpikjes1964
parity+

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

38Ca

Numri i masës38
numri i neutroneve18
relative atomic mass
37,976319223 ± 0,000000208 Da
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
443,7 ± 0,25 ms
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1966
parity+

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

39Ca

Numri i masës39
numri i neutroneve19
relative atomic mass
38,970710811 ± 0,00000064 Da
g-factor
0,68093333333333 ± 0,00010666666666667
natural abundance
Radioaktivitet☢️ radioactive element
half-life
860,3 ± 0,8 ms
Spini3/2
nuclear quadrupole moment
0,038 ± 0,003
koha e zbulimit apo shpikjes1943
parity+

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

40Ca

Numri i masës40
numri i neutroneve20
relative atomic mass
39,96259085 ± 0,000000022 Da
g-factor
0
natural abundance
96,941 ± 0,156
Radioaktivitet☢️ radioactive element
half-life
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1922
parity+

decay modeintensitet
+ (double β+ decay)

41Ca

Numri i masës41
numri i neutroneve21
relative atomic mass
40,962277905 ± 0,000000147 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
99,4 ± 1,5 ky
Spini7/2
nuclear quadrupole moment
-0,0665 ± 0,0018
koha e zbulimit apo shpikjes1939
parity-

decay modeintensitet
ϵ (electron capture)100%

42Ca

Numri i masës42
numri i neutroneve22
relative atomic mass
41,95861778 ± 0,000000159 Da
g-factor
0
natural abundance
0,647 ± 0,023
Radioaktivitetstable isotope
half-lifeNot Radioactive ☢️
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1934
parity+

43Ca

Numri i masës43
numri i neutroneve23
relative atomic mass
42,958766381 ± 0,000000244 Da
g-factor
-0,37638 ± 0,000017142857142857
natural abundance
0,135 ± 0,01
Radioaktivitetstable isotope
half-lifeNot Radioactive ☢️
Spini7/2
nuclear quadrupole moment
-0,0408 ± 0,0008
koha e zbulimit apo shpikjes1934
parity-

44Ca

Numri i masës44
numri i neutroneve24
relative atomic mass
43,955481489 ± 0,000000348 Da
g-factor
0
natural abundance
2,086 ± 0,11
Radioaktivitetstable isotope
half-lifeNot Radioactive ☢️
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1922
parity+

45Ca

Numri i masës45
numri i neutroneve25
relative atomic mass
44,95618627 ± 0,000000392 Da
g-factor
-0,37897142857143 ± 0,00037142857142857
natural abundance
Radioaktivitet☢️ radioactive element
half-life
162,61 ± 0,09 d
Spini7/2
nuclear quadrupole moment
0,038 ± 0,012
koha e zbulimit apo shpikjes1940
parity-

decay modeintensitet
β (β decay)100%

46Ca

Numri i masës46
numri i neutroneve26
relative atomic mass
45,953687726 ± 0,000002398 Da
g-factor
0
natural abundance
0,004 ± 0,003
Radioaktivitet☢️ radioactive element
half-life
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1938
parity+

decay modeintensitet
(double β decay)

47Ca

Numri i masës47
numri i neutroneve27
relative atomic mass
46,954541134 ± 0,000002384 Da
g-factor
-0,40182857142857 ± 0,00031428571428571
natural abundance
Radioaktivitet☢️ radioactive element
half-life
4,536 ± 0,003 d
Spini7/2
nuclear quadrupole moment
0,084 ± 0,006
koha e zbulimit apo shpikjes1951
parity-

decay modeintensitet
β (β decay)100%

48Ca

Numri i masës48
numri i neutroneve28
relative atomic mass
47,952522654 ± 0,000000018 Da
g-factor
0
natural abundance
0,187 ± 0,021
Radioaktivitet☢️ radioactive element
half-life
56 ± 10 Ey
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1938
parity+

decay modeintensitet
(double β decay)
β (β decay)

49Ca

Numri i masës49
numri i neutroneve29
relative atomic mass
48,955662625 ± 0,00000019 Da
g-factor
-0,91993333333333 ± 0,00053333333333333
natural abundance
Radioaktivitet☢️ radioactive element
half-life
8,718 ± 0,006 m
Spini3/2
nuclear quadrupole moment
-0,036 ± 0,003
koha e zbulimit apo shpikjes1950
parity-

decay modeintensitet
β (β decay)100%

50Ca

Numri i masës50
numri i neutroneve30
relative atomic mass
49,957499215 ± 0,0000017 Da
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
13,45 ± 0,05 s
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1964
parity+

decay modeintensitet
β (β decay)100%

51Ca

Numri i masës51
numri i neutroneve31
relative atomic mass
50,960995663 ± 0,00000056 Da
g-factor
-0,69973333333333 ± 0,00073333333333333
natural abundance
Radioaktivitet☢️ radioactive element
half-life
10 ± 0,8 s
Spini3/2
nuclear quadrupole moment
0,036 ± 0,012
koha e zbulimit apo shpikjes1980
parity-

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

52Ca

Numri i masës52
numri i neutroneve32
relative atomic mass
51,963213646 ± 0,00000072 Da
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
4,6 ± 0,3 s
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1985
parity+

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

53Ca

Numri i masës53
numri i neutroneve33
relative atomic mass
52,968451 ± 0,000047 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
461 ± 90 ms
Spini1/2
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1983
parity-

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

54Ca

Numri i masës54
numri i neutroneve34
relative atomic mass
53,972989 ± 0,000052 Da
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
90 ± 6 ms
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1997
parity+

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

55Ca

Numri i masës55
numri i neutroneve35
relative atomic mass
54,979978 ± 0,000172 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
22 ± 2 ms
Spini5/2
nuclear quadrupole moment
koha e zbulimit apo shpikjes1997
parity-

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

56Ca

Numri i masës56
numri i neutroneve36
relative atomic mass
55,985496 ± 0,000268 Da
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
11 ± 2 ms
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1997
parity+

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

57Ca

Numri i masës57
numri i neutroneve37
relative atomic mass
56,992958 ± 0,000429 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
Spini5/2
nuclear quadrupole moment
koha e zbulimit apo shpikjes2009
parity-

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

58Ca

Numri i masës58
numri i neutroneve38
relative atomic mass
57,998357 ± 0,000537 Da
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes2009
parity+

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

59Ca

Numri i masës59
numri i neutroneve39
relative atomic mass
59,006237 ± 0,000644 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
Spini5/2
nuclear quadrupole moment
koha e zbulimit apo shpikjes2018
parity-

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

60Ca

Numri i masës60
numri i neutroneve40
relative atomic mass
60,011809 ± 0,000751 Da
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes2018
parity+

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

61Ca

Numri i masës61
numri i neutroneve41
relative atomic mass
61,020408 ± 0,000859 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
Spini1/2
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes
parity-

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

historia

zbuluesSir Humphrey Davy
vendndodhja e zbulimitEngland
koha e zbulimit apo shpikjes1808
EtimologjiaLatin: calx, calcis (lime).
pronunciationKAL-si-em (anglisht)

burim

Abundance
Abundance in Earth's crust
41 500 mg/kg
natural abundance (Oqeani)
412 mg/L
natural abundance (Trupi i njeriut)
1,4 %
natural abundance (meteoroid)
1,1 %
natural abundance (Diell)
0,007 %
Abundance in Universe
0,007 %

Nuclear Screening Constants

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