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🧪 Chemistry  ·  Chemical Bonding and Molecular Structure  ·  NEET & JEE

In MO theory, bonding MOs are formed by:

Answer: Constructive interference of atomic wavefunctions.

  • A Constructive interference of atomic wavefunctions
  • B Destructive interference between two atomic orbital wavefunctions
  • C Overlap restricted exclusively to spherical s orbitals
  • D An arbitrary, unguided combination of orbitals

Correct answer: A. Constructive interference of atomic wavefunctions

Explanation: Constructive interference of atomic orbitals lowers energy to give bonding MOs; destructive interference raises energy to give antibonding MOs.

Linear180 deg, e.g. CO2Trigonal Planar120 deg, e.g. BF3Tetrahedral109.5 deg, e.g. CH4Trigonal Bipyramidale.g. PCl5Octahedrale.g. SF6

VSEPR theory predicts molecular shape from the number of bonding and lone electron pairs around the central atom.

Concept context

Understand how atoms join to form molecules. Covers ionic and covalent bonding, VSEPR theory, hybridization (sp, sp², sp³), molecular orbital theory, bond polarity, and intermolecular forces like hydrogen bonding.

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