Multiple Choice
Which of the following elements is a nonmetal that is a polyatomic solid?
4. Atoms and Elements
Periodic Table: Phases (Simplified)
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Which of the following exists as a diatomic solid at room temperature?
A
Bromine
B
Tellurium
C
Sulfur
D
Chlorine
E
Iodine
Verified step by step guidance1
Begin by understanding the concept of diatomic molecules. Diatomic molecules consist of two atoms, which can be of the same or different elements. Common diatomic elements include hydrogen (H₂), nitrogen (N₂), oxygen (O₂), fluorine (F₂), chlorine (Cl₂), bromine (Br₂), and iodine (I₂).
Next, consider the physical states of these diatomic molecules at room temperature. Most diatomic molecules are gases at room temperature, such as hydrogen, nitrogen, oxygen, fluorine, and chlorine.
Identify the diatomic elements that are not gases at room temperature. Bromine is a liquid, and iodine is a solid at room temperature.
Focus on iodine, which is a diatomic solid at room temperature. Iodine exists as I₂ molecules in its solid form.
Conclude that among the given options, iodine is the element that exists as a diatomic solid at room temperature.
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