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Chemistry 28 Online
OpenStudy (musicfreak):

Which substance at STP conducts electricity because the substance contains mobile electrons? 1. H 2. He 3. K 4. Kr

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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