Alumini

Alumini (Al)

metallic chemical element of silvery appearance with symbol Al and atomic number 13
Atomic Number13
Atomic Weight26.9815385
Rhif màs27
Group13
Period3
Blockp
Proton13 p+
Niwtron14 n0
Electron13 e-
Animated Bohr model of Al (Alumini)

Nodwedd Ffisegol

Atomic Radius
125 pm
molar volume
covalent radius
126 pm
Metallic Radius
125 pm
ionic radius
39 pm
Crystal Radius
53 pm
Van der Waals radius
184 pm
density
2.7 g/cm³
Atomic Radii Of The Elements: Alumini0102030405060708090100110120130140150160170180190pmAtomic RadiusCovalent RadiusMetallic RadiusVan der Waals radius

Nodwedd Gemegol

egni
proton affinity
electron affinity
0.43283 eV/particle
ionization energy
5.9857684 eV/particle
ionization energy of Al (Alumini)
enthalpy of vaporization
284.1 kJ/mol
enthalpy of fusion
10.75 kJ/mol
standard enthalpy of formation
330.9 kJ/mol
Electron
plisgyn yr electron2, 8, 3
Bohr model: Al (Alumini)
valence electron3
Lewis structure: Al (Alumini)
trefn yr electronnau[Ne] 3s2 3p1
1s2 2s2 2p6 3s2 3p1
Enhanced Bohr model of Al (Alumini)
Orbital Diagram of Al (Alumini)
Cyflwr ocsidiad-2, -1, 0, 1, 2, 3
Electronegatifedd
1.61
Electrophilicity Index
0.9274010094475963 eV/particle
cyflwr sylfaenol mater
cyflwr materSolid
gaseous state of matter
Boiling Point
2,792.15 K
Melting Point
933.473 K
critical pressure
critical temperature
6,700.15 K
triple point
appearance
lliw
Silver
appearancesilvery gray metallic
Mynegrif plygiant
nodwedd ffisegol gwrthrych
Thermal Conductivity
thermal expansion
0.0000231 1/K
molar heat capacity
Specific Heat Capacity
0.897 J/(g⋅K)
heat capacity ratio
electrical properties
typeConductor
dargludedd trydanol
38 MS/m
Gwrthedd
0.000000026 m Ω
superconductivity
1.175 K
magnetism
typeparamagnetic
magnetic susceptibility (Mass)
0.0000000078 m³/Kg
magnetic susceptibility (Molar)
0.00000000021 m³/mol
magnetic susceptibility (Volume)
0.0000211
magnetic ordering
Curie temperature
Néel temperature
strwythur
Crystal StructureFace Centered Cubic (FCC)
lattice constant
4.05 Å
Lattice Anglesπ/2, π/2, π/2
nodwedd mecanyddol deunyddiau
hardness
2.75 MPa
bulk modulus
76 GPa
shear modulus
26 GPa
Young's modulus
70 GPa
Poisson's ratio
0.35
speed of sound
5,100 m/s
classification
CategoryPost-transition metals, Poor metals
CAS GroupIIIB
IUPAC GroupIIIA
Glawe Number78
Mendeleev Number82
Pettifor Number80
Geochemical Classmajor
Goldschmidt classificationlitophile

other

Gas Basicity
polarizability
57.8 ± 1 a₀
C6 Dispersion Coefficient
528 a₀
allotrope
Neutron cross section
0.233
Neutron Mass Absorption
0.03
quantum number2P1/2
space group225 (Fm_3m)

Isotopes of Aluminum

Stable Isotopes1
Unstable Isotopes22
Natural Isotopes1

21Al

Rhif màs21
neutron number8
relative atomic mass
21.029082 ± 0.000644 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin5/2
nuclear quadrupole moment
dyddiad darganfod
parity+

decay modeintensity
p (proton emission)

22Al

Rhif màs22
neutron number9
relative atomic mass
22.01954 ± 0.00043 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
91.1 ± 0.5 ms
spin4
nuclear quadrupole moment
dyddiad darganfod1982
parity

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)55%
2p (2-proton emission)1.1%
β+α (β+-delayed α emission)0.038%

23Al

Rhif màs23
neutron number10
relative atomic mass
23.007244351 ± 0.00000037 Da
g-factor
1.556 ± 0.008
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
446 ± 6 ms
spin5/2
nuclear quadrupole moment
dyddiad darganfod1969
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)1.22%

24Al

Rhif màs24
neutron number11
relative atomic mass
23.999947598 ± 0.000000244 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
2.053 ± 0.004 s
spin4
nuclear quadrupole moment
dyddiad darganfod1953
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+α (β+-delayed α emission)0.035%
β+ p (β+-delayed proton emission)0.0016%

25Al

Rhif màs25
neutron number12
relative atomic mass
24.990428308 ± 0.000000069 Da
g-factor
1.45788 ± 0.00048
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
7.1666 ± 0.0023 s
spin5/2
nuclear quadrupole moment
0.24 ± 0.02
dyddiad darganfod1953
parity+

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

26Al

Rhif màs26
neutron number13
relative atomic mass
25.986891876 ± 0.000000071 Da
g-factor
0.5606 ± 0.0008
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
717 ± 24 ky
spin5
nuclear quadrupole moment
0.26 ± 0.03
dyddiad darganfod1934
parity+

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

27Al

Rhif màs27
neutron number14
relative atomic mass
26.981538408 ± 0.00000005 Da
g-factor
1.45628 ± 0.000008
natural abundance
100
Dadfeilio ymbelydrolstable isotope
Hanner oesNot Radioactive ☢️
spin5/2
nuclear quadrupole moment
0.1466 ± 0.001
dyddiad darganfod1922
parity+

28Al

Rhif màs28
neutron number15
relative atomic mass
27.981910009 ± 0.000000052 Da
g-factor
1.0803333333333 ± 0.0016666666666667
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
2.245 ± 0.005 m
spin3
nuclear quadrupole moment
0.172 ± 0.012
dyddiad darganfod1934
parity+

decay modeintensity
β (β decay)100%

29Al

Rhif màs29
neutron number16
relative atomic mass
28.980453164 ± 0.00000037 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
6.56 ± 0.06 m
spin5/2
nuclear quadrupole moment
dyddiad darganfod1939
parity+

decay modeintensity
β (β decay)100%

30Al

Rhif màs30
neutron number17
relative atomic mass
29.982969171 ± 0.000002077 Da
g-factor
1.004 ± 0.0023333333333333
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
3.62 ± 0.06 s
spin3
nuclear quadrupole moment
dyddiad darganfod1961
parity+

decay modeintensity
β (β decay)100%

31Al

Rhif màs31
neutron number18
relative atomic mass
30.983949754 ± 0.0000024 Da
g-factor
1.5328 ± 0.002
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
644 ± 25 ms
spin5/2
nuclear quadrupole moment
0.134 ± 0.002
dyddiad darganfod1971
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)1.6%

32Al

Rhif màs32
neutron number19
relative atomic mass
31.988084338 ± 0.0000077 Da
g-factor
1.953 ± 0.002
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
32.6 ± 0.5 ms
spin1
nuclear quadrupole moment
0.0255 ± 0.0003
dyddiad darganfod1971
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)0.7%

33Al

Rhif màs33
neutron number20
relative atomic mass
32.990877685 ± 0.0000075 Da
g-factor
1.636 ± 0.002
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
41.46 ± 0.09 ms
spin5/2
nuclear quadrupole moment
0.141 ± 0.003
dyddiad darganfod1971
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)8.5%

34Al

Rhif màs34
neutron number21
relative atomic mass
33.996781924 ± 0.000002259 Da
g-factor
0.53925 ± 0.004
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
53.73 ± 0.13 ms
spin4
nuclear quadrupole moment
dyddiad darganfod1977
parity-

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

35Al

Rhif màs35
neutron number22
relative atomic mass
34.999759816 ± 0.0000079 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
38.16 ± 0.21 ms
spin5/2
nuclear quadrupole moment
dyddiad darganfod1979
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)35.8%
2n (2-neutron emission)

36Al

Rhif màs36
neutron number23
relative atomic mass
36.006388 ± 0.0001605 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
90 ± 40 ms
spin
nuclear quadrupole moment
dyddiad darganfod1979
parity

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)31%
2n (2-neutron emission)

37Al

Rhif màs37
neutron number24
relative atomic mass
37.010531 ± 0.0001935 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
11.4 ± 0.3 ms
spin5/2
nuclear quadrupole moment
dyddiad darganfod1979
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)52%
2n (2-neutron emission)1%

38Al

Rhif màs38
neutron number25
relative atomic mass
38.017681 ± 0.000161 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
9 ± 0.7 ms
spin0
nuclear quadrupole moment
0
dyddiad darganfod1989
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)84%
2n (2-neutron emission)

39Al

Rhif màs39
neutron number26
relative atomic mass
39.02307 ± 0.000322 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
7.6 ± 1.6 ms
spin5/2
nuclear quadrupole moment
dyddiad darganfod1989
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)97%
2n (2-neutron emission)

40Al

Rhif màs40
neutron number27
relative atomic mass
40.03094 ± 0.000322 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin
nuclear quadrupole moment
dyddiad darganfod1996
parity

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

41Al

Rhif màs41
neutron number28
relative atomic mass
41.037134 ± 0.000429 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin5/2
nuclear quadrupole moment
dyddiad darganfod1997
parity+

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

42Al

Rhif màs42
neutron number29
relative atomic mass
42.045078 ± 0.000537 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin
nuclear quadrupole moment
dyddiad darganfod2007
parity

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

43Al

Rhif màs43
neutron number30
relative atomic mass
43.05182 ± 0.000644 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin5/2
nuclear quadrupole moment
dyddiad darganfod2007
parity+

decay modeintensity
β (β decay)
β n (β-delayed neutron emission)
2n (2-neutron emission)
Aluminium-4
Aluminium bar surface etched

hanes

darganfyddwr neu ddyfeisiwrHans Christian Oersted
man darganfodDenmark
dyddiad darganfod1825
geirdarddiadLatin: alumen, aluminis, (alum).
ynganiadah-LOO-men-em (Saesneg)

source

Abundance
Abundance in Earth's crust
82,300 mg/kg
natural abundance (cefnfor)
0.002 mg/L
natural abundance (corff dynol)
0.00009 %
natural abundance (Awyrfaen)
0.91 %
natural abundance (Haul)
0.006 %
Abundance in Universe
0.005 %

Nuclear Screening Constants

1s0.409
2p4.0366
2s4.7864
3p8.9344
3s8.8828