Moderate

In a group, the bond length _ down the group.

Correct answer: D. Increases

  • A. Remains the same
  • B. Changes irregularly
  • C. Decreases
  • D. Increases

Explanation

Bond length depends upon the strength of a bond. The stronger the bond is, the greater the force of attraction will be resulting in a shorter bond length. Bond strength decreases down the group as atomic sizes increase. This results in an increased bond length.

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Chemical bonding explains molecular shape through VSEPR theory and distinguishes sigma bonds from pi bonds. Questions involve hybridization, bond angles, dipole moment and bond energy, including how electron-pair repulsion determines geometry and how bond polarity differs from the overall polarity of a molecule.

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