SAT Chemistry

Category - Multiple Choice

Which of the following elements does NOT exist as a diatomic molecule at room temperature?
  1. Hydrogen
  2. Oxygen
  3. Neon
  4. Fluorine
  5. Bromine
Explanation
Answer: Neon

The common elements that exist as diatomic molecules at room temperature are hydrogen, nitrogen, oxygen, fluorine, chlorine, bromine, and iodine. Therefore, the element that does not exist as a diatomic molecule is neon.
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