11-sodium Naturally occuring isotopes:
Na-23 ( 100% )
Isotopes:
Na-17 Na-18 Na-19 Na-20 Na-21 Na-22 Na-24 Na-25 Na-26 Na-27 Na-28 Na-29 Na-30 Na-31 Na-32 Na-33 Na-34 Na-35

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