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हाइड्रोजन के रेडियो सक्रिय समस्थानिक को कहते है ?

What is the radioactive isotope of hydrogen called?
Anonymous Quiz
ड्यूटेरियम/deuterium
प्रोटियम /protium
रेडियम/radium
ट्राईटियम/tritium
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