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  1. Xenon (Xe), chemical element, a heavy and extremely rare gas of Group 18 ( noble gases) of the periodic table. It was the first noble gas found to form true chemical compounds. More than 4.5 times heavier than air, xenon is colourless, odourless, and tasteless.

    www.britannica.com/science/xenon

    Xenon is a chemical element with symbol Xe and atomic number 54 in the periodic table. It was discovered by William Ramsay in the year 1898. Xenon is a rare, colourless, odourless, tasteless and chemically unreactive gas. Xenon is a trace gas ( i.e., which makes up less than 1 % by volume of Earth’s atmosphere.

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    WEBApr 22, 2024 · Xenon is a rare and heavy noble gas that forms true chemical compounds and is used in flashlamps and lasers. Learn about …

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