How many lone and bonded pairs do these compounds have: -H2O

-NH3

-CCl4

-CO2

-N2

-CCl2F2

-SF6

-H2S

-H2CO

-C2H6

Iknow #2 is d. i just need to know why

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.

Which of these conditions most likely produces an unstable isotope?