A student knows that hydrogen (H) atoms and oxygen (O) atoms combine to form water (H2O). The student correctly predicts that hy
drogen (H) and sulfur (S) will combine to form hydrogen sulfide (H2S) On what is this prediction most likely based? A. Oxygen and sulfur are in the same family with the same number of valence electrons.
B. Oxygen and sulfur are in the same period or row with the same number of neutrons
C. Oxygen and sulfur are in the same period or row with the same number of protons
D. Oxygen and sulfur are in the same family with the same number of energy levels.
