What are the columns in the periodic table called and what do they tell us about the Bohr's Atomic Model?

Which statement about the stamps is correct?

Match the acid base pairs by arranging the acid name with the conjugate base formula. hydrogen carbonate hydrogen phosphate carbonic acid read water sulfuric acid phosphoric acid a. co32- b. hso4- c. hco3- d. po43- e. h2po4- f. oh-

The excretory system,need answers for all: )