13-Al
 basic
13-aluminum
Naturally occuring isotopes:
Al-27   ( 100% )
Isotopes:
Al-21   Al-22   Al-23   Al-24   Al-25   Al-26   Al-28   Al-29   Al-30   Al-31   Al-32   Al-33   Al-34   Al-35   Al-36   Al-37   Al-38   Al-39  
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