Only two elements, mercury and ______________, are liquid at room temperature and atmospheric pressure.
A) sodium
B) bromine
C) phosphorus
D) iodine
Correct Answer:
Verified
Q55: About 99% by mass of Earth's atmosphere
Q56: About 74% by mass of Earth's crust
Q57: Nearly 100% by mass of Earth's core
Q58: About 15% by mass of Earth's core
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A)
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Q64: In a given period, the element of
Q65: Electrons in the outermost shell are referred
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