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Which substance is not a solid at 20˚C and one atmosphere of pressure? A. Kr B. U C. K D. Ag
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5 votes
Which substance is not a solid at 20˚C and one atmosphere of pressure?

A. Kr
B. U
C. K
D. Ag

User Afroman Makgalemela
by
5.9k points

1 Answer

3 votes
Choose A, Kr is noble gas
User Dmitrii Bychkov
by
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