Multiple Choice
Which of the following elements does not exist as a diatomic molecule in nature?
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2. Atoms & Elements
Periodic Table: Elemental Forms
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Which of the following elements exists as a diatomic molecule in its standard elemental form?
A
Sulfur
B
Oxygen
C
Carbon
D
Neon
Verified step by step guidance1
Understand that some elements naturally exist as diatomic molecules (molecules composed of two atoms) in their standard elemental form at room temperature and pressure.
Recall the common diatomic elements, often remembered by the mnemonic "BrINClHOF" which stands for Bromine, Iodine, Nitrogen, Chlorine, Hydrogen, Oxygen, and Fluorine.
Analyze each option: Sulfur typically exists as S₈ (octatomic), Carbon as a network solid (graphite or diamond), Neon as a noble gas (monatomic), and Oxygen as O₂ (diatomic).
Identify that among the given options, only Oxygen naturally exists as a diatomic molecule (O₂) in its elemental form.
Conclude that Oxygen is the correct answer because it is the element that exists as a diatomic molecule under standard conditions.
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