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2
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0answers
46 views
Why does the metastable form of Technetium-95 have a longer half-life than its most stable state? [migrated]
I was looking at the isotopes of technetium page on Wikipedia recently, and it seems that the metastable $\ce{^{95m}Tc}$ has a substantially longer half-life (61d) than its most stable state of ...
1
vote
3answers
97 views
Why can't we use fusion to make ourselves rich?
As we know on fusing two hydrogen atoms we can convert it to helium and by breaking them we get two $\ce{H}$ atoms. So why can't we convert mercury to gold by removing 1 proton per atom?
7
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4answers
154 views
Is there a simple field test for heavy water?
Thought experiment
Given two glasses of water, how would one detect which glass contains heavy water, and which contains potable water without using complicated laboratory equipment?
Something like ...
6
votes
1answer
114 views
How is the electron “trapped in the crystal” in irradiated NaCl?
Pennsylvania State University provides irradiated NaCl (180,000 rads of gamma radiation) to teachers for a very entertaining demonstration. The salt is orange after irradiation. When it is placed on a ...