12-magnesium Naturally occuring isotopes:
Mg-24 ( 78.99% ) Mg-25 ( 10.00% ) Mg-26 ( 11.01% )
Isotopes:
Mg-19 Mg-20 Mg-21 Mg-22 Mg-23 Mg-27 Mg-28 Mg-29 Mg-30 Mg-31 Mg-32 Mg-33 Mg-34 Mg-35 Mg-36 Mg-37

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