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Type: Multiple-Choice
Category: Periodic Table and Elements
Level: Grade 10
Score: 1
Author: teachchemistry
Last Modified: 7 years ago

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Periodic Table and Elements Question

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Grade 10 Periodic Table and Elements

Which of the following elements DOES NOT obey the octet rule?
  1. radon
  2. xenon
  3. argon
  4. helium