prep1 lesson2 part1

The nitrate group is a ................................. group.

• a. monovalent

• b. divalent

• c. trivalent

• d. tetravalent

All of these atomic groups carry the same charge, except.....................

• a. nitrite.

• b. nitrate.

• c. bicarbonate.

• d. ammonium.

All of the following are monovalent atomic groups, except ................................• group.

• a. phosphate

• b. nitrate

• c. hydroxide

• d. bicarbonate

. Which of the following is a trivalent atomic group ?

• a. Hydroxide.

• b. Sulphate.

• c. Ammonium.

• d. Phosphate.

. Phosphate and sulphate groups are similar in the...................................................

• a. type of atoms.

• b. valency.

• c. number of atoms.

• d. no correct answer.