Multiple choice

The highest ionization energy is exhibited by:

  1. halogens

  2. alkaline earth metals

  3. transition metals

  4. noble gases
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ionization energy is the energy required to remove electron from an atom in its ground state. The noble gases having completely filled outermost shell have no tendency to lose any electron. So, they have highest ionisation energy.

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