Which of the following is an example of an arrhenius base

Noble gases are the most reactive elements on the periodic table. a. true b. false

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.

How are isotopes of the same chemical element alike? how are they different?