الرئيسية » أرشيف الوسم : catalytically

أرشيف الوسم : catalytically

Argon

Argon A chemical element, Ar, atomic number 18, and atomic weight 39.948. Argon is the third member of group 18 in the periodic table. The gaseous elements in this group are called the noble, inert, or rare gases, although argon is not actually rare. The Earth’s atmosphere is the only …

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