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40 Which particle diagram represents a sample of xenon at STP?

June 2023 Regents Chemistry Exam


40 Which particle diagram represents a sample of xenon at STP?




Solution: Xenon is not a diatomic element, eliminating choices 3 and 4. It is in group 18 which is a Noble Gases group and would therefore be a gas. Gases are spread out and take the shape of the container.

Answer:1

PS: To memorize diatomic elements, we can use the mnemonic BrINCl HOF


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