to which grop and period do the following elements belong carbon, neon, aluminium, potassium ,calcium, sulphur​

When svante arrhenius first proposed his acid-base theory, he was a doctoral candidate. his professors thought his ideas were unfounded. within a decade, the arrhenius theory of acid-base was widely accepted and praised within the scientific world. arrhenius defined acids as compounds having ionizable hydrogen and bases as compounds with ionizable a) barium. b) hydronium. c) hydroxide. d) oxygen.

Tell me the iupac name of the following compounds:

What is the molecular weight of copper