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added by globalquiz.org Nov. 5, 2018, 10:28 p.m.
Which of the following is not a hydrogen isotope?
tritium
protium
iridium
deuterium
Protium, deuterium and tritium are hydrogen isotope varieties. Iridium is a chemical element.
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Very interesting!
reach: rather globalchemistryelementshydrogenisotopes

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This is initial version of the question.
added by globalquiz.org Nov. 5, 2018, 10:28 p.m.
reach: rather globalchemistryelementshydrogenisotopes
This is a correction, already accepted and applied to the original question.
added by globalquiz.org Nov. 5, 2018, 10:30 p.m.
reach: rather globalchemistryelementshydrogenisotopes

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