What is the maximum number of electrons in the second principal energy level?
02 32 8 18

Different isotopes indicate that an element will have different numbers of

What is avogadro’s number, and why is it useful

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.