Argon-40

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Argon is a gas that is used in plasma globes. It’s element symbol is Ar, it's atomic number is 18, with an atomic mass 40. It is also used in Argon light bulbs. In water this atom will sink, by the slightest bit. It was discovered by Sir William Ramsay, in 1894. Argon is a noble gas. It is also used in Argon light bulbs.





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