Which of the following is NOT true of hydrogen bonds?
A) They are quite weak.
B) The hydrogen is slightly positive.
C) They are uncommon in macromolecules.
D) They form in salts such as NaCl.
E) They always involve hydrogen.

Question

Quizplus · Accepted Answer

Hydrogen bonds are common in macromolecules, such as DNA and proteins, and play important roles in their structure and function. Choice A is true, as hydrogen bonds are weaker than covalent and ionic bonds. Choice B is also true; in a hydrogen bond, the hydrogen atom is partially positive due to the electronegativity difference between it and the bonded atom. Choice D is false; hydrogen bonds do not form in salts such as NaCl. Choice E is generally true, as hydrogen bonds involve a hydrogen atom bonded to a highly electronegative atom (such as oxygen or nitrogen) and another highly electronegative atom nearby.

Which of the Following Is NOT True of Hydrogen Bonds