Калий

Калий (K)

chemical element with symbol K and atomic number 19
Atomic Number19
Atomic Weight39.0983
Адади массавӣ39
Group1
Period4
Blocks
proton19 p+
neutron20 n0
electron19 e-
Animated Bohr model of K (Калий)

Хусусияти Физикӣ

Atomic Radius
220 pm
molar volume
covalent radius
196 pm
Metallic Radius
203 pm
ionic radius
137 pm
Crystal Radius
151 pm
Van der Waals radius
275 pm
зичӣ
0,89 g/cm³
Atomic Radii Of The Elements: Калий0102030405060708090100110120130140150160170180190200210220230240250260270280pmAtomic RadiusCovalent RadiusMetallic RadiusVan der Waals radius

Chemical Property

энергия
proton affinity
electron affinity
0,50147 eV/particle
ionization energy
4,34066354 eV/particle
ionization energy of K (Калий)
enthalpy of vaporization
2,33 kJ/mol
гармои гудозиш
102,5 kJ/mol
standard enthalpy of formation
electron
Абри электронӣ2, 8, 8, 1
Bohr model: K (Калий)
valence electron1
Lewis structure: K (Калий)
electron configuration[Ar] 4s1
1s2 2s2 2p6 3s2 3p6 4s1
Enhanced Bohr model of K (Калий)
Orbital Diagram of K (Калий)
oxidation number-1, 1
electronegativity
0.82
Electrophilicity Index
0,7633848415985606 eV/particle
fundamental state of matter
phase of matterSolid
gaseous state of matter
Boiling Point
1 032,15 K
Melting Point
336,65 K
critical pressure
16 MPa
critical temperature
2 223,15 K
triple point
appearance
Ранг
Silver
appearancesilvery gray
refractive index
thermodynamic material property
Thermal Conductivity
thermal expansion
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
навъConductor
electrical conductivity
14 MS/m
electrical resistivity
0,00000007000000000002 m Ω
superconductivity
magnetism
навъparamagnetic
magnetic susceptibility (Mass)
0,0000000067 m³/Kg
magnetic susceptibility (Molar)
0,000000000262 m³/mol
magnetic susceptibility (Volume)
0,00000574
magnetic ordering
Curie temperature
Néel temperature
сохт
Crystal StructureBody Centered Cubic (BCC)
lattice constant
5,23 Å
Lattice Anglesπ/2, π/2, π/2
mechanical property
hardness
0,4 MPa
bulk modulus
3,1 GPa
shear modulus
1,3 GPa
Young's modulus
Poisson's ratio
speed of sound
2 000 m/s
classification
CategoryAlkali metals, Alkali metals
CAS GroupIA
IUPAC GroupIA
Glawe Number10
Mendeleev Number3
Pettifor Number10
Geochemical Classalkali metal
Goldschmidt classificationlitophile

other

Gas Basicity
polarizability
289,7 ± 0,3 a₀
C6 Dispersion Coefficient
3 923 a₀
allotrope
Neutron cross section
2,1
Neutron Mass Absorption
0,0018
ададҳои квантӣ2S1/2
space group229 (Im_3m)

Isotopes of Potassium

Stable Isotopes2
Unstable Isotopes27
Natural Isotopes3
Isotopic Composition3993.26%3993.26%416.73%416.73%400.01%400.01%

31K

Адади массавӣ31
neutron number12
relative atomic mass
31,03678 ± 0,000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin3/2
nuclear quadrupole moment
таърихи кашф2019
parity+

decay modeintensity
3p100%

32K

Адади массавӣ32
neutron number13
relative atomic mass
32,023607 ± 0,000429 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin1
nuclear quadrupole moment
таърихи кашф
parity+

decay modeintensity
p (proton emission)

33K

Адади массавӣ33
neutron number14
relative atomic mass
33,008095 ± 0,000215 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin3/2
nuclear quadrupole moment
таърихи кашф
parity+

decay modeintensity
p (proton emission)

34K

Адади массавӣ34
neutron number15
relative atomic mass
33,99869 ± 0,00021 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin1
nuclear quadrupole moment
таърихи кашф
parity+

decay modeintensity
p (proton emission)

35K

Адади массавӣ35
neutron number16
relative atomic mass
34,988005406 ± 0,00000055 Da
g-factor
0,26133333333333 ± 0,0046666666666667
natural abundance
radioactivity☢️ radioactive element
half-life
175,2 ± 1,9 ms
spin3/2
nuclear quadrupole moment
таърихи кашф1976
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)0.37%

36K

Адади массавӣ36
neutron number17
relative atomic mass
35,981301887 ± 0,000000349 Da
g-factor
0,274 ± 0,0005
natural abundance
radioactivity☢️ radioactive element
half-life
341 ± 3 ms
spin2
nuclear quadrupole moment
таърихи кашф1967
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)0.048%
β+α (β+-delayed α emission)0.0034%

37K

Адади массавӣ37
neutron number18
relative atomic mass
36,97337589 ± 0,0000001 Da
g-factor
0,13547333333333 ± 0,00004
natural abundance
radioactivity☢️ radioactive element
half-life
1,23651 ± 0,00094 s
spin3/2
nuclear quadrupole moment
0,109 ± 0,004
таърихи кашф1958
parity+

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

38K

Адади массавӣ38
neutron number19
relative atomic mass
37,969081114 ± 0,000000209 Da
g-factor
0,457 ± 0,002
natural abundance
radioactivity☢️ radioactive element
half-life
7,651 ± 0,019 m
spin3
nuclear quadrupole moment
таърихи кашф1937
parity+

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

39K

Адади массавӣ39
neutron number20
relative atomic mass
38,96370648482 ± 0,00000000489 Da
g-factor
0,26098 ± 0,0000053333333333333
natural abundance
93,2581 ± 0,0044
radioactivitystable isotope
half-lifeNot Radioactive ☢️
spin3/2
nuclear quadrupole moment
0,0603 ± 0,0006
таърихи кашф1921
parity+

40K

Адади массавӣ40
neutron number21
relative atomic mass
39,963998165 ± 0,00000006 Da
g-factor
natural abundance
0,0117 ± 0,0001
radioactivity☢️ radioactive element
half-life
1,248 ± 0,003 Gy
spin4
nuclear quadrupole moment
-0,075 ± 0,0008
таърихи кашф1935
parity-

decay modeintensity
β (β decay)89.28%
β+ (β+ decay; β+ = ϵ + e+)10.72%

41K

Адади массавӣ41
neutron number22
relative atomic mass
40,96182525611 ± 0,00000000403 Da
g-factor
0,143248 ± 0,0000033333333333333
natural abundance
6,7302 ± 0,0044
radioactivitystable isotope
half-lifeNot Radioactive ☢️
spin3/2
nuclear quadrupole moment
0,0734 ± 0,0007
таърихи кашф1921
parity+

42K

Адади массавӣ42
neutron number23
relative atomic mass
41,962402305 ± 0,000000113 Da
g-factor
-0,57125 ± 0,0003
natural abundance
radioactivity☢️ radioactive element
half-life
12,355 ± 0,007 h
spin2
nuclear quadrupole moment
таърихи кашф1935
parity-

decay modeintensity
β (β decay)100%

43K

Адади массавӣ43
neutron number24
relative atomic mass
42,960734701 ± 0,00000044 Da
g-factor
0,10886666666667 ± 0,00053333333333333
natural abundance
radioactivity☢️ radioactive element
half-life
22,3 ± 0,1 h
spin3/2
nuclear quadrupole moment
таърихи кашф1949
parity+

decay modeintensity
β (β decay)100%

44K

Адади массавӣ44
neutron number25
relative atomic mass
43,961586984 ± 0,00000045 Da
g-factor
-0,428 ± 0,002
natural abundance
radioactivity☢️ radioactive element
half-life
22,13 ± 0,19 m
spin2
nuclear quadrupole moment
таърихи кашф1954
parity-

decay modeintensity
β (β decay)100%

45K

Адади массавӣ45
neutron number26
relative atomic mass
44,960691491 ± 0,00000056 Da
g-factor
0,1156 ± 0,00053333333333333
natural abundance
radioactivity☢️ radioactive element
half-life
17,8 ± 0,6 m
spin3/2
nuclear quadrupole moment
таърихи кашф1964
parity+

decay modeintensity
β (β decay)100%

46K

Адади массавӣ46
neutron number27
relative atomic mass
45,961981584 ± 0,00000078 Da
g-factor
-0,5255 ± 0,003
natural abundance
radioactivity☢️ radioactive element
half-life
96,3 ± 0,08 s
spin2
nuclear quadrupole moment
таърихи кашф1965
parity-

decay modeintensity
β (β decay)100%

47K

Адади массавӣ47
neutron number28
relative atomic mass
46,961661612 ± 0,0000015 Da
g-factor
3,866 ± 0,018
natural abundance
radioactivity☢️ radioactive element
half-life
17,38 ± 0,03 s
spin1/2
nuclear quadrupole moment
0
таърихи кашф1964
parity+

decay modeintensity
β (β decay)100%

48K

Адади массавӣ48
neutron number29
relative atomic mass
47,965341184 ± 0,00000083 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
6,83 ± 0,14 s
spin1
nuclear quadrupole moment
таърихи кашф1972
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)1.14%

49K

Адади массавӣ49
neutron number30
relative atomic mass
48,968210753 ± 0,00000086 Da
g-factor
2,6772 ± 0,0016
natural abundance
radioactivity☢️ radioactive element
half-life
1,26 ± 0,05 s
spin1/2
nuclear quadrupole moment
0
таърихи кашф1972
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)86%

50K

Адади массавӣ50
neutron number31
relative atomic mass
49,972380015 ± 0,0000083 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
472 ± 4 ms
spin0
nuclear quadrupole moment
0
таърихи кашф1972
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)28.6%
2n (2-neutron emission)

51K

Адади массавӣ51
neutron number32
relative atomic mass
50,975828664 ± 0,000014 Da
g-factor
0,342 ± 0,0013333333333333
natural abundance
radioactivity☢️ radioactive element
half-life
365 ± 5 ms
spin3/2
nuclear quadrupole moment
таърихи кашф1983
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)65%
2n (2-neutron emission)

52K

Адади массавӣ52
neutron number33
relative atomic mass
51,981602 ± 0,000036 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
110 ± 4 ms
spin2
nuclear quadrupole moment
таърихи кашф1983
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)72.2%
2n (2-neutron emission)2.3%

53K

Адади массавӣ53
neutron number34
relative atomic mass
52,9868 ± 0,00012 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
30 ± 5 ms
spin3/2
nuclear quadrupole moment
таърихи кашф1983
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)64%
2n (2-neutron emission)10%

54K

Адади массавӣ54
neutron number35
relative atomic mass
53,994471 ± 0,000429 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
10 ± 5 ms
spin2
nuclear quadrupole moment
таърихи кашф1983
parity-

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

55K

Адади массавӣ55
neutron number36
relative atomic mass
55,000505 ± 0,000537 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin3/2
nuclear quadrupole moment
таърихи кашф2009
parity+

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

56K

Адади массавӣ56
neutron number37
relative atomic mass
56,008567 ± 0,000644 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin2
nuclear quadrupole moment
таърихи кашф2009
parity-

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

57K

Адади массавӣ57
neutron number38
relative atomic mass
57,015169 ± 0,000644 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin3/2
nuclear quadrupole moment
таърихи кашф2018
parity+

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

58K

Адади массавӣ58
neutron number39
relative atomic mass
58,023543 ± 0,000751 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin2
nuclear quadrupole moment
таърихи кашф2019
parity-

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

59K

Адади массавӣ59
neutron number40
relative atomic mass
59,030864 ± 0,000859 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin3/2
nuclear quadrupole moment
таърихи кашф2018
parity+

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

таърих

кошифSir Humphrey Davy
макони кашфEngland
таърихи кашф1807
РешашиносӣEnglish: pot ash; symbol from Latin: kalium, (alkali).
pronunciationpe-TASS-i-em (Англисӣ)

source

Abundance
Abundance in Earth's crust
20 900 mg/kg
natural abundance (Уқёнус)
399 mg/L
natural abundance (human body)
0,2 %
natural abundance (meteoroid)
0,07 %
natural abundance (Офтоб)
0,0004 %
Abundance in Universe
0,0003 %

Nuclear Screening Constants

1s0.5105
2p3.9728
2s5.9938
3p11.2744
3s10.3201
4s15.5048