Magnezij[um]

Magnezij[um] (Mg)

hemijski element sa simbolom Mg i atomskim brojem 12
Atomic Number12
Atomic Weight24.305
Maseni broj24
Group2
Period3
Blocks
Proton12 p+
Neutron12 n0
Elektron12 e-
Animated Bohrov model atoma of Mg (Magnezij[um])

Physical Property

Atomski Radijus
150 pm
Molarni volumen
covalent radius
139 pm
Metallic Radius
136 pm
Ionski radijus
57 pm
Crystal Radius
71 pm
Van der Waalsov radijus
173 pm
gustoća
1,74 g/cm³
Atomic Radii Of The Elements: Magnezij[um]0102030405060708090100110120130140150160170180pmAtomski RadijusCovalent RadiusMetallic RadiusVan der Waalsov radijus

Chemical Property

energija
proton affinity
819,6 kJ/mol
electron affinity
ionization energy
7,646235 eV/particle
ionization energy of Mg (Magnezij[um])
Toplota isparavanja
131,8 kJ/mol
toplota topljenja
9,2 kJ/mol
standard enthalpy of formation
147,1 kJ/mol
Elektron
electron shell2, 8, 2
Bohrov model atoma: Mg (Magnezij[um])
Valentni elektron2
Lewis structure: Mg (Magnezij[um])
electron configuration[Ne] 3s2
1s2 2s2 2p6 3s2
Enhanced Bohrov model atoma of Mg (Magnezij[um])
Orbital Diagram of Mg (Magnezij[um])
oksidacijsko stanje0, 1, 2
Elektronegativnost
1.31
Electrophilicity Index
fundamental state of matter
agregatno stanjeSolid
gaseous state of matter
Boiling Point
1.363,15 K
Melting Point
923,15 K
critical pressure
Kritična temperatura
Trojna tačka
appearance
boja
Silver
appearanceshiny grey solid
Indeks prelamanja
thermodynamic material property
Thermal Conductivity
thermal expansion
0,0000248 1/K
molar heat capacity
24,869 J/(mol K)
Specific Heat Capacity
1,023 J/(g⋅K)
heat capacity ratio
electrical properties
typeConductor
Specifična električna provodljivost
23 MS/m
electrical resistivity
0,00000004399999999999 m Ω
Superprovodljivost
Magnetizam
typeparamagnetic
magnetic susceptibility (Mass)
0,0000000069 m³/Kg
magnetic susceptibility (Molar)
0,000000000168 m³/mol
magnetic susceptibility (Volume)
0,000012
magnetic ordering
Kirijeva tačka
Néel temperature
struktura
Crystal StructureSimple Hexagonal (HEX)
lattice constant
3,21 Å
Lattice Anglesπ/2, π/2, 2 π/3
mechanical property
Tvrdoća
2,5 MPa
bulk modulus
45 GPa
shear modulus
17 GPa
Young's modulus
45 GPa
Poisson's ratio
0,29
Brzina zvuka
4.602 m/s
klasifikacija
CategoryAlkaline earth metals, Alkaline earth metals
CAS GroupIIA
IUPAC GroupIIA
Glawe Number73
Mendeleev Number76
Pettifor Number73
Geochemical Classmajor
Goldschmidt classificationlitophile

other

Gas Basicity
797,3 kJ/mol
polarizability
71,2 ± 0,4 a₀
C6 Dispersion Coefficient
626 a₀
allotrope
Neutron cross section
0,063
Neutron Mass Absorption
0,0001
Kvantni brojevi1S0
space group194 (P63/mmc)

Isotopes of Magnesium

Stable Isotopes3
Unstable Isotopes20
Natural Isotopes3
Isotopic Composition2478.96%2478.96%2611.02%2611.02%2510.01%2510.01%

19Mg

Maseni broj19
broj neutrona7
relative atomic mass
19,03417992 ± 0,000064413 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
5 ± 3 ps
spin1/2
nuclear quadrupole moment
0
datum otkrića2007
parity-

decay modeintensity
2p (2-proton emission)100%

20Mg

Maseni broj20
broj neutrona8
relative atomic mass
20,018763075 ± 0,000002 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
90,4 ± 0,5 ms
spin0
nuclear quadrupole moment
0
datum otkrića1974
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)30.3%

21Mg

Maseni broj21
broj neutrona9
relative atomic mass
21,011705764 ± 0,00000081 Da
g-factor
-0,3932 ± 0,0028
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
120 ± 0,4 ms
spin5/2
nuclear quadrupole moment
datum otkrića1963
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)20.1%
β+α (β+-delayed α emission)0.116%
B+pA0.016%

22Mg

Maseni broj22
broj neutrona10
relative atomic mass
21,999570597 ± 0,00000017 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
3,8745 ± 0,0007 s
spin0
nuclear quadrupole moment
0
datum otkrića1961
parity+

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

23Mg

Maseni broj23
broj neutrona11
relative atomic mass
22,994123768 ± 0,000000034 Da
g-factor
-0,35753333333333 ± 0,0002
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
11,3039 ± 0,0032 s
spin3/2
nuclear quadrupole moment
0,114 ± 0,003
datum otkrića1939
parity+

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

24Mg

Maseni broj24
broj neutrona12
relative atomic mass
23,985041689 ± 0,000000013 Da
g-factor
0
natural abundance
78,965 ± 0,049
Radioaktivnoststable isotope
Vrijeme poluraspadaNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
datum otkrića1920
parity+

25Mg

Maseni broj25
broj neutrona13
relative atomic mass
24,985836966 ± 0,00000005 Da
g-factor
-0,342132 ± 0,000012
natural abundance
10,011 ± 0,013
Radioaktivnoststable isotope
Vrijeme poluraspadaNot Radioactive ☢️
spin5/2
nuclear quadrupole moment
0,199 ± 0,002
datum otkrića1920
parity+

26Mg

Maseni broj26
broj neutrona14
relative atomic mass
25,982592972 ± 0,000000031 Da
g-factor
0
natural abundance
11,025 ± 0,038
Radioaktivnoststable isotope
Vrijeme poluraspadaNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
datum otkrića1920
parity+

27Mg

Maseni broj27
broj neutrona15
relative atomic mass
26,984340647 ± 0,00000005 Da
g-factor
-0,8212 ± 0,003
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
9,435 ± 0,027 m
spin1/2
nuclear quadrupole moment
0
datum otkrića1934
parity+

decay modeintensity
β (β decay)100%

28Mg

Maseni broj28
broj neutrona16
relative atomic mass
27,983875426 ± 0,00000028 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
20,915 ± 0,009 h
spin0
nuclear quadrupole moment
0
datum otkrića1953
parity+

decay modeintensity
β (β decay)100%

29Mg

Maseni broj29
broj neutrona17
relative atomic mass
28,988607163 ± 0,000000369 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
1,3 ± 0,12 s
spin3/2
nuclear quadrupole moment
-0,16 ± 0,04
datum otkrića1971
parity+

decay modeintensity
β (β decay)100%

30Mg

Maseni broj30
broj neutrona18
relative atomic mass
29,990465454 ± 0,00000139 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
317 ± 4 ms
spin0
nuclear quadrupole moment
0
datum otkrića1971
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)0.06%

31Mg

Maseni broj31
broj neutrona19
relative atomic mass
30,996648232 ± 0,0000033 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
270 ± 2 ms
spin1/2
nuclear quadrupole moment
0
datum otkrića1977
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)6.2%

32Mg

Maseni broj32
broj neutrona20
relative atomic mass
31,999110138 ± 0,0000035 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
80,4 ± 0,4 ms
spin0
nuclear quadrupole moment
0
datum otkrića1977
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)5.5%

33Mg

Maseni broj33
broj neutrona21
relative atomic mass
33,005327862 ± 0,000002859 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
92 ± 1,2 ms
spin3/2
nuclear quadrupole moment
0,13 ± 0,09
datum otkrića1979
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)14%
2n (2-neutron emission)

34Mg

Maseni broj34
broj neutrona22
relative atomic mass
34,008935455 ± 0,0000074 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
44,9 ± 0,4 ms
spin0
nuclear quadrupole moment
0
datum otkrića1979
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)21%
2n (2-neutron emission)0.1%

35Mg

Maseni broj35
broj neutrona23
relative atomic mass
35,01679 ± 0,0002895 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
11,3 ± 0,6 ms
spin3/2
nuclear quadrupole moment
datum otkrića1989
parity-

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

36Mg

Maseni broj36
broj neutrona24
relative atomic mass
36,021879 ± 0,000741 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
3,9 ± 1,3 ms
spin0
nuclear quadrupole moment
0
datum otkrića1989
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)48%
2n (2-neutron emission)

37Mg

Maseni broj37
broj neutrona25
relative atomic mass
37,030286265 ± 0,00075035 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
8 ± 4 ms
spin3/2
nuclear quadrupole moment
datum otkrića1996
parity-

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

38Mg

Maseni broj38
broj neutrona26
relative atomic mass
38,03658 ± 0,00054 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
spin0
nuclear quadrupole moment
0
datum otkrića1997
parity+

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

39Mg

Maseni broj39
broj neutrona27
relative atomic mass
39,045921 ± 0,000551 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
spin7/2
nuclear quadrupole moment
datum otkrića
parity-

decay modeintensity
n (neutron emission)
β (β decay)

40Mg

Maseni broj40
broj neutrona28
relative atomic mass
40,053194 ± 0,000537 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
spin0
nuclear quadrupole moment
0
datum otkrića2007
parity+

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

41Mg

Maseni broj41
broj neutrona29
relative atomic mass
41,062373 ± 0,000537 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
spin3/2
nuclear quadrupole moment
datum otkrića
parity-

decay modeintensity
β (β decay)
β n (β-delayed neutron emission)
Magnesium crystals

historija

otkrivač ili izumiteljSir Humphrey Davy
mjesto otkrićaEngland
datum otkrića1808
EtimologijaFrom Magnesia ancient city in district of Thessaly, Greece.
pronunciationmag-NEE-zih-em (engleski)

izvor

Abundance
Abundance in Earth's crust
23.300 mg/kg
natural abundance (okean)
1.290 mg/L
natural abundance (ljudsko tijelo)
0,027 %
natural abundance (Meteoroidi)
12 %
natural abundance (Sunce)
0,07 %
Abundance in Universe
0,06 %

Nuclear Screening Constants

1s0.3911
2p4.1742
2s4.608
3s8.6925