In which of the following molecules does hydrogen bonding occur?

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Question: In which of the following molecules does hydrogen bonding occur?

Options:

Correct Answer: H2O

Solution:

Hydrogen bonding occurs in H2O due to the presence of highly electronegative oxygen atoms bonded to hydrogen, creating strong dipole interactions.

In which of the following molecules does hydrogen bonding occur?

In which of the following molecules does hydrogen bonding occur?

Step 1: Identify the molecules given in the question.
Step 2: Look for hydrogen atoms in the molecules.
Step 3: Check if the hydrogen atoms are bonded to highly electronegative atoms like oxygen, nitrogen, or fluorine.
Step 4: If hydrogen is bonded to these electronegative atoms, hydrogen bonding can occur.
Step 5: In the case of H2O (water), it has hydrogen atoms bonded to oxygen, which is highly electronegative.
Step 6: Conclude that hydrogen bonding occurs in H2O due to the strong dipole interactions created.

Hydrogen Bonding – Hydrogen bonding occurs when hydrogen is covalently bonded to a highly electronegative atom, leading to strong dipole interactions with other electronegative atoms.
Electronegativity – The ability of an atom to attract electrons, which is crucial in determining the presence of hydrogen bonds.
Molecular Structure – Understanding the molecular structure helps identify potential hydrogen bonding sites based on the presence of electronegative atoms.