Multiple Choice
At a temperature of and , which element is most likely to be in the liquid phase?
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4. Atoms and Elements
Periodic Table: Phases (Simplified)
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Which element is classified as a nonmetal and is solid at standard temperature and pressure (STP)?
A
Mercury (Hg)
B
Neon (Ne)
C
Carbon (C)
D
Bromine (Br)
Verified step by step guidance1
Understand the classification of elements into metals, nonmetals, and metalloids based on their properties such as conductivity, luster, and state at standard temperature and pressure (STP).
Recall that standard temperature and pressure (STP) is defined as 0°C (273.15 K) and 1 atm pressure, and consider the physical state of each element at these conditions.
Evaluate each given element: Mercury (Hg) is a metal and liquid at STP; Neon (Ne) is a noble gas and gaseous at STP; Bromine (Br) is a nonmetal but liquid at STP.
Identify Carbon (C) as a nonmetal that is solid at STP, which fits the criteria of the problem.
Conclude that Carbon (C) is the element classified as a nonmetal and solid at STP based on its physical state and chemical classification.
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