Identify the following element: a metal, 2 valence electrons, +2 oxidation number, valence electrons are in period 4.

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.

When the water vapor cools it condenses select a number that represents his process on the

What type of electromagnetic radiation has a shorter wavelength than blue light