Hydrogen bonds A) form between two hydrogen atoms. B) form between hydrogen and oxygen atoms within a molecule. C) form between different molecules. D) involve sharing of electrons. E) are the strongest bonds because of their length. What determine if a molecule is polar, nonpolar, or ionic? A) the number of protons B) The bond distances C) the differences in the of the aromas D) The ionic charges E) All of the above Which pair has similar chemical properties? A)^1H and^22Na B)^12C and^18 Sa C)^16O and^8S D)^12C and^14 C E)^8H and^2Ha The number of different elements that exist is closest to A) 12