AP BIOLOGY

BIOCHEMISTRY

PH

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is a hydrogen bond?
A
attraction between molecules of the same substance
B
substance that is dissolved in a solution
C
weak attraction between a hydrogen atom and another atom
D
way plants transport water through their tissues
Explanation: 

Detailed explanation-1: -Hydrogen bonding is a special type of dipole-dipole attraction between molecules, not a covalent bond to a hydrogen atom. It results from the attractive force between a hydrogen atom covalently bonded to a very electronegative atom such as a N, O, or F atom and another very electronegative atom.

Detailed explanation-2: -Answer and Explanation: A weak force of attraction that exists between a hydrogen atom in one molecule and an electronegative atom of another molecule is known as hydrogen bonding.

Detailed explanation-3: -hydrogen bonding, interaction involving a hydrogen atom located between a pair of other atoms having a high affinity for electrons; such a bond is weaker than an ionic bond or covalent bond but stronger than van der Waals forces.

Detailed explanation-4: -Hydrogen bonds are a strong type of dipole-dipole interaction. As a Rule of Thumb, they are weaker than covalent and ionic ("intramolecular") bonds", but stronger than most dipole-dipole interactions.

Detailed explanation-5: -Summary – Rules of hydrogen bonding RULE 1: The greater the charges, the stronger the hydrogen bond. RULE 2: The shorter the distance the stronger the hydrogen bond. Hydrogen bond length is traditionally measured by the distance between the donor atom and the acceptor atom.

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