Helium, Hydrogen, Hellium, Hidrogen, Gold, Silver, Copper, Mercury, In periodic table of elements, the symbol used for Iron is ________., Cu, Ir, Fe, In, In periodic table of elements, the symbol used for Silver is ________., Au, Ag, Hg, Si, The following elements are examples of Noble Gases, EXCEPT:, Argon, Krypton, Neon, Fluorine

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