Assertion: occurring tellurium | /r/HasProperty | a mixture of eight isotopes
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Source sentences:
text: Naturally occurring tellurium is a mixture of eight isotopes and they are found in the percentages shown: 120Te (0.1%), 122Te (2.6%), 123Te (0.9%), 124Te (4.8%), 125Te (7.1%), 126Te (19.0%), 128Te (31.7%), and 130Te (33.8%).