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

A pi bond is formed by:

Answer: Lateral (sideways) overlap of p orbitals.

  • A Lateral (sideways) overlap of p orbitals
  • B Direct head-on overlap of two p orbitals along the bond axis
  • C Complete transfer of electrons between two bonded atoms
  • D Overlap of two spherical s orbitals along the bond axis

Correct answer: A. Lateral (sideways) overlap of p orbitals

Explanation: Pi bonds are formed by lateral overlap of parallel p orbitals, above and below the internuclear axis.

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.

Read the full Chemical Bonding and Molecular Structure notes →