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Fluorine is a chemical element with symbol F and atomic number 9. Classified as a halogen, Fluorine is a gas at room temperature.
symbols are abbreviations used in chemistry for chemical element
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A thin, atmosphere-like volume surrounding a planet or natural satellite where molecules are bound to that body, but where the density is too low for them to behave as a gas by colliding with each other.
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Radioactive Dating. Also known as Carbon 14 dating
Answer: Hello, Here is some facts about it.
Explanation: The U.S. government is exploring C/OVID-19 vaccine certifications for use internationally and domestically. The administration has said that a vaccine passport may be required in the future for international travelers entering the U.S., but it will not impose a federal requirement for domestic purposes.