The Big Bang Theory Pop Quiz

When Sheldon was trying to replicate Howard's card-trick, he experimented with the idea of a radioactive tracer, what was the name of that tracer?
Choose the right answer:
Option A Chromium-845
Option B Uranium-235
Option C Plutonium-322
Option D Iridium-642
 Karthigesh posted پہلے زیادہ سے سال ایک
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