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Magnesium-26

Properties and data of the isotope 26Mg.


Content

See also: list of Magnesium isotopes.

 

General data

Name of the isotope:Magnesium-26; Mg-26Symbol:26Mg or 2612MgMass number A:26 (= number of nucleons)Atomic number Z:12 (= number of protons)Neutrons N:14Isotopic mass:25.9825930(2) u (atomic weight of Magnesium-26)Nuclide mass:25.9760101 u (calculated nuclear mass without electrons)Mass excess:-16.21452 MeVMass defect:0.232616208 u (per nucleus)Nuclear binding energy:216.68060205 MeV (per nucleus)
8.33386931 MeV (average binding energy per nucleon)
Separation energy:SN = 11.09308(4) MeV (first neutron)
SP = 14.1457(12) MeV (first proton)
Half-life:stableSpin and parity:
(nuclear angular momentum)
0+Charge radius:3.0337(18) femtometer fmMirror nucleus:Silicon-26Year of discovery:1920

 

Parent Nuclides

Direct parent isotopes are: 26Al, 26Na, 27Na.

 

Occurrence

Comparison of the natural Magnesium isotopes including isotopic abundance (mole fraction of the isotope mixture in percent):

 

Atomic Mass maQuantityHalf-lifeSpin
Magnesium
Isotopic mixture
24.305 u100 %
Isotope 24Mg23.98504170(9) u78.965 %
[78.88 - 79.05 %]
stable0+
Isotope 25Mg24.9858370(3) u10.011 %
[9.988 - 10.034 %]
stable5/2+
Isotope 26Mg25.9825930(2) u11.024 %
[10.96 - 11.09 %]
stable0+

 

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 14) and isobaric (same nucleon number A = 26) with Magnesium-26. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

 

OZIsotone N = 14Isobar A = 26
519B
620C
721N
822O26O
923F26F
1024Ne26Ne
1125Na26Na
1226Mg26Mg
1327Al26Al
1428Si26Si
1529P26P
1630S26S
1731Cl
1832Ar
1933K
2034Ca

 

External data and identifiers

Adopted Levels, Gammas:NuDat 26Mg

 


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Last update: 2023-10-04


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