You have three molecules of sodium bicarbonate 3NaHCO3. Which statement is true?

A.) The number of oxygen atoms (O) is less than the sum of the sodium (Na), hydrogen (H), and carbon (C) atoms.
B.) The number of sodium atoms (Na) equals the number of hydrogen atoms (H).
C.) The number of oxygen atoms (O) is greater than the sum of the sodium (Na), hydrogen (H), and carbon (C) atoms.
D.) The number of carbon atoms (C) is three times greater than the number of oxygen atoms (O).

3 NaHCO3 means you have 3 copies of NaHCO3 ( i think anyway..) so that would make me think there are 3 Na, 3 H, 3 C and 3*3 = 9 O atoms

Explanation:

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.