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USA Physics and Chemistry Contests
National Chemistry Olympiad
2008 National Chemistry Olympiad
1
1
Part of
2008 National Chemistry Olympiad
Problems
(1)
2008 USNCO Local #1: Liquid element
Source:
12/3/2012
Which element is a liquid at
2
5
∘
C
25^\circ\text{C}
2
5
∘
C
and
1.0
atm
1.0 \text{ atm}
1.0
atm
?
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A
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bromine
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B
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krypton
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C
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phosphorus
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D
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xenon
<span class='latex-bold'>(A)</span>\hspace{.05in}\text{bromine} \qquad<span class='latex-bold'>(B)</span>\hspace{.05in}\text{krypton} \qquad<span class='latex-bold'>(C)</span>\hspace{.05in}\text{phosphorus} \qquad<span class='latex-bold'>(D)</span>\hspace{.05in}\text{xenon} \qquad
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bromine
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B
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krypton
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C
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phosphorus
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(
D
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xenon