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Q39 (NDA-I/2013) Science & Technology › Basic Science (Physics, Chemistry, Biology) › Basic chemical principles Answer Verified

The bond which is present between water molecules is

Result
Your answer: —  Â·  Correct: C
Explanation

Water molecules exhibit two distinct types of bonding: intramolecular and intermolecular. Within a single water molecule, the hydrogen and oxygen atoms are held together by polar covalent bonds [1]. However, the question specifically asks for the bond present "between" water molecules, which refers to intermolecular forces. This interaction is known as a hydrogen bond. Hydrogen bonding occurs because the highly electronegative oxygen atom attracts the electron density, creating a partial negative charge, while the hydrogen atoms carry a partial positive charge. This electrostatic attraction between the hydrogen of one molecule and the oxygen of a neighboring molecule forms a dynamic network. While van der Waals forces are present in all molecules, the dominant and characteristic intermolecular force that gives water its unique properties, such as high surface tension and boiling point, is the hydrogen bond.

Sources

  1. [1] http://tims.itf.gov.ng/Textbook/81CUXF/897886/covalent_vs_ionic_bonds.pdf
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