Sodi

Sodi (Na)

chemical element with symbol Na and atomic number 11
Atomic Number11
Atomic Weight22.98976928
Rhif màs23
Group1
Period3
Blocks
Proton11 p+
Niwtron12 n0
Electron11 e-
Animated Bohr model of Na (Sodi)

Nodwedd Ffisegol

Atomic Radius
180 pm
molar volume
covalent radius
155 pm
Metallic Radius
157 pm
ionic radius
99 pm
Crystal Radius
113 pm
Van der Waals radius
227 pm
density
0.97 g/cm³
Atomic Radii Of The Elements: Sodi0102030405060708090100110120130140150160170180190200210220230pmAtomic RadiusCovalent RadiusMetallic RadiusVan der Waals radius

Nodwedd Gemegol

egni
proton affinity
electron affinity
0.547926 eV/particle
ionization energy
5.1390767 eV/particle
ionization energy of Na (Sodi)
enthalpy of vaporization
97.9 kJ/mol
enthalpy of fusion
2.64 kJ/mol
standard enthalpy of formation
107.5 kJ/mol
Electron
plisgyn yr electron2, 8, 1
Bohr model: Na (Sodi)
valence electron1
Lewis structure: Na (Sodi)
trefn yr electronnau[Ne] 3s1
1s2 2s2 2p6 3s1
Enhanced Bohr model of Na (Sodi)
Orbital Diagram of Na (Sodi)
Cyflwr ocsidiad-1, 0, 1
Electronegatifedd
0.93
Electrophilicity Index
0.8805526605183994 eV/particle
cyflwr sylfaenol mater
cyflwr materSolid
gaseous state of matter
Boiling Point
1,156.09 K
Melting Point
370.944 K
critical pressure
35 MPa
critical temperature
2,573.15 K
triple point
appearance
lliw
Silver
appearancesilvery white metallic
Mynegrif plygiant
nodwedd ffisegol gwrthrych
Thermal Conductivity
thermal expansion
0.00007 1/K
molar heat capacity
28.23 J/(mol K)
Specific Heat Capacity
1.228 J/(g⋅K)
heat capacity ratio
electrical properties
typeConductor
dargludedd trydanol
21 MS/m
Gwrthedd
0.00000004699999999998 m Ω
superconductivity
magnetism
typeparamagnetic
magnetic susceptibility (Mass)
0.0000000088 m³/Kg
magnetic susceptibility (Molar)
0.0000000002 m³/mol
magnetic susceptibility (Volume)
0.0000086
magnetic ordering
Curie temperature
Néel temperature
strwythur
Crystal StructureBody Centered Cubic (BCC)
lattice constant
4.23 Å
Lattice Anglesπ/2, π/2, π/2
nodwedd mecanyddol deunyddiau
hardness
0.5 MPa
bulk modulus
6.3 GPa
shear modulus
3.3 GPa
Young's modulus
10 GPa
Poisson's ratio
speed of sound
3,200 m/s
classification
CategoryAlkali metals, Alkali metals
CAS GroupIA
IUPAC GroupIA
Glawe Number11
Mendeleev Number2
Pettifor Number11
Geochemical Classmajor
Goldschmidt classificationlitophile

other

Gas Basicity
polarizability
162.7 ± 0.5 a₀
C6 Dispersion Coefficient
1,518 a₀
allotrope
Neutron cross section
0.53
Neutron Mass Absorption
0.0007
quantum number2S1/2
space group229 (Im_3m)

Isotopes of Sodium

Stable Isotopes1
Unstable Isotopes22
Natural Isotopes1

17Na

Rhif màs17
neutron number6
relative atomic mass
17.037273 ± 0.000064 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod2017
parity+

decay modeintensity
p (proton emission)100%

18Na

Rhif màs18
neutron number7
relative atomic mass
18.026879388 ± 0.000100785 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
1.3 ± 0.4 zs
spin1
nuclear quadrupole moment
dyddiad darganfod2004
parity-

decay modeintensity
p (proton emission)

19Na

Rhif màs19
neutron number8
relative atomic mass
19.013880264 ± 0.000011309 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin5/2
nuclear quadrupole moment
dyddiad darganfod1969
parity+

decay modeintensity
p (proton emission)100%

20Na

Rhif màs20
neutron number9
relative atomic mass
20.007354301 ± 0.00000119 Da
g-factor
0.1847 ± 0.0001
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
447.9 ± 2.3 ms
spin2
nuclear quadrupole moment
0.101 ± 0.008
dyddiad darganfod1950
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+α (β+-delayed α emission)25%

21Na

Rhif màs21
neutron number10
relative atomic mass
20.997654459 ± 0.000000045 Da
g-factor
1.5907333333333 ± 0.000026666666666667
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
22.455 ± 0.0054 s
spin3/2
nuclear quadrupole moment
0.138 ± 0.011
dyddiad darganfod1940
parity+

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

22Na

Rhif màs22
neutron number11
relative atomic mass
21.994437547 ± 0.000000141 Da
g-factor
0.582 ± 0.001
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
2.6019 ± 0.0006 y
spin3
nuclear quadrupole moment
0.18 ± 0.011
dyddiad darganfod1935
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
e+ (positron emission)90.57%
ϵ (electron capture)9.43%

23Na

Rhif màs23
neutron number12
relative atomic mass
22.98976928195 ± 0.00000000194 Da
g-factor
1.4783333333333 ± 0.00002
natural abundance
100
Dadfeilio ymbelydrolstable isotope
Hanner oesNot Radioactive ☢️
spin3/2
nuclear quadrupole moment
0.104 ± 0.001
dyddiad darganfod1921
parity+

24Na

Rhif màs24
neutron number13
relative atomic mass
23.990963012 ± 0.000000017 Da
g-factor
0.422575 ± 0.0002
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
14.956 ± 0.0015 h
spin4
nuclear quadrupole moment
dyddiad darganfod1934
parity+

decay modeintensity
β (β decay)100%

25Na

Rhif màs25
neutron number14
relative atomic mass
24.989953974 ± 0.000001288 Da
g-factor
1.4732 ± 0.0016
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
59.1 ± 0.6 s
spin5/2
nuclear quadrupole moment
0.0015 ± 0.0003
dyddiad darganfod1943
parity+

decay modeintensity
β (β decay)100%

26Na

Rhif màs26
neutron number15
relative atomic mass
25.992634649 ± 0.000003759 Da
g-factor
0.95033333333333 ± 0.00066666666666667
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
1,071.28 ± 0.25 ms
spin3
nuclear quadrupole moment
-0.0053 ± 0.0002
dyddiad darganfod1958
parity+

decay modeintensity
β (β decay)100%

27Na

Rhif màs27
neutron number16
relative atomic mass
26.994076408 ± 0.000004 Da
g-factor
1.558 ± 0.002
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
301 ± 6 ms
spin5/2
nuclear quadrupole moment
-0.0071 ± 0.0003
dyddiad darganfod1968
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)0.098%

28Na

Rhif màs28
neutron number17
relative atomic mass
27.998939 ± 0.000011 Da
g-factor
2.426 ± 0.003
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
33.1 ± 1.3 ms
spin1
nuclear quadrupole moment
0.389 ± 0.011
dyddiad darganfod1969
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)0.58%

29Na

Rhif màs29
neutron number18
relative atomic mass
29.002877091 ± 0.000007876 Da
g-factor
1.6326666666667 ± 0.0053333333333333
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
43.2 ± 0.4 ms
spin3/2
nuclear quadrupole moment
0.085 ± 0.003
dyddiad darganfod1969
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)22%
2n (2-neutron emission)

30Na

Rhif màs30
neutron number19
relative atomic mass
30.009097931 ± 0.000005074 Da
g-factor
1.0415 ± 0.005
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
45.9 ± 0.7 ms
spin2
nuclear quadrupole moment
dyddiad darganfod1969
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)28.6%
2n (2-neutron emission)1.24%
βα (β-delayed α emission)5.5%

31Na

Rhif màs31
neutron number20
relative atomic mass
31.013146654 ± 0.000015 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
16.8 ± 0.3 ms
spin3/2
nuclear quadrupole moment
dyddiad darganfod1969
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)36%
2n (2-neutron emission)0.73%
3n (3-neutron emission)0.05%

32Na

Rhif màs32
neutron number21
relative atomic mass
32.020011024 ± 0.00004 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
12.9 ± 0.3 ms
spin3
nuclear quadrupole moment
dyddiad darganfod1972
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)26%
2n (2-neutron emission)7.6%

33Na

Rhif màs33
neutron number22
relative atomic mass
33.025529 ± 0.000483 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
8.2 ± 0.4 ms
spin3/2
nuclear quadrupole moment
dyddiad darganfod1972
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)47%
2n (2-neutron emission)13%

34Na

Rhif màs34
neutron number23
relative atomic mass
34.03401 ± 0.0006435 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
5.5 ± 1 ms
spin1
nuclear quadrupole moment
dyddiad darganfod1983
parity+

decay modeintensity
β (β decay)100%
2n (2-neutron emission)50%
β n (β-delayed neutron emission)15%

35Na

Rhif màs35
neutron number24
relative atomic mass
35.040614 ± 0.00072 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
1.5 ± 0.5 ms
spin3/2
nuclear quadrupole moment
dyddiad darganfod1983
parity+

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

36Na

Rhif màs36
neutron number25
relative atomic mass
36.049279 ± 0.000737 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin
nuclear quadrupole moment
dyddiad darganfod
parity

decay modeintensity
n (neutron emission)

37Na

Rhif màs37
neutron number26
relative atomic mass
37.057042 ± 0.000737 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin3/2
nuclear quadrupole moment
dyddiad darganfod2002
parity+

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

38Na

Rhif màs38
neutron number27
relative atomic mass
38.066458 ± 0.000768 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin
nuclear quadrupole moment
dyddiad darganfod
parity

decay modeintensity
n (neutron emission)

39Na

Rhif màs39
neutron number28
relative atomic mass
39.075123 ± 0.000797 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin3/2
nuclear quadrupole moment
dyddiad darganfod2019
parity+

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

hanes

darganfyddwr neu ddyfeisiwrSir Humphrey Davy
man darganfodEngland
dyddiad darganfod1807
geirdarddiadMedieval Latin: sodanum, (headache remedy); symbol from Latin natrium, (sodium carbonate).
ynganiadSO-di-em (Saesneg)

source

Abundance
Abundance in Earth's crust
23,600 mg/kg
natural abundance (cefnfor)
10,800 mg/L
natural abundance (corff dynol)
0.14 %
natural abundance (Awyrfaen)
0.55 %
natural abundance (Haul)
0.004 %
Abundance in Universe
0.002 %

Nuclear Screening Constants

1s0.3741
2p4.1982
2s4.4286
3s8.4926