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OpenStudy (musicfreak):
Which substance at STP conducts electricity because the substance contains mobile electrons? 1. H 2. He 3. K 4. Kr
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OpenStudy (chmvijay):
which one do u think ?
OpenStudy (anonymous):
3.K he and kr are noble gases and H also doesnt has any free electron. K is a metal which has one electron in its outermost orbit which is very mobile.therefore it will conduct electricity.
OpenStudy (musicfreak):
Thanks you so much! I had a feeling it was that one but i wasn't sure...
OpenStudy (anonymous):
no problem.
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