Multiple Choice
At a temperature of and a pressure of , which element would most likely be in the liquid phase?
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4. Atoms and Elements
Periodic Table: Phases (Simplified)
Multiple Choice
Which of the following elements is a solid at STP (standard temperature and pressure)?
A
Iron (Fe)
B
Bromine (Br)
C
Mercury (Hg)
D
Neon (Ne)
Verified step by step guidance1
Understand what STP (standard temperature and pressure) means: it refers to a temperature of 0°C (273.15 K) and a pressure of 1 atm.
Recall the physical states of the given elements at STP: Iron (Fe), Bromine (Br), Mercury (Hg), and Neon (Ne).
Identify the state of each element at STP: Neon (Ne) is a noble gas and exists as a gas; Bromine (Br) is a halogen and is a liquid; Mercury (Hg) is a metal but is liquid at room temperature; Iron (Fe) is a metal and is solid at STP.
Use the periodic table and knowledge of element properties to confirm that Iron (Fe) is solid at STP due to its metallic bonding and high melting point.
Conclude that among the options, Iron (Fe) is the element that is solid at standard temperature and pressure.
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