Select the incorrect Statement:

Correct answer: C. Molecular cations are less abundant than molecular anions.

  • A. Molecule may gain an electron to form a molecular anion.
  • B. Molecule may lose an electron to form a molecular cation.
  • C. Molecular cations are less abundant than molecular anions.
  • D. These molecular ions can be formed by passing a high-energy electron beam through a gas.

Explanation

Abundance of cationic molecular ions is due to the ability to stabilize unpaired electrons which makes the formation of cationic molecular ions energetically less demanding. That's why cationic molecular ions are more abundant than anionic ones.

This question appeared on the ETEA MDCAT 2014 paper, which you can sit online with every answer explained.

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