Question:
The third ionisation enthalpy is highest in
The third ionisation enthalpy is highest in
Updated On: Apr 1, 2025
- Alkali metals
- Alkaline earth metals
- Chalcogens
- Pnictogens
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The Correct Option is B
Solution and Explanation
The third ionisation enthalpy is highest in alkaline earth metals because after the removal of the second electron, the resulting ion achieves a stable noble gas configuration, making it more difficult to remove the third electron. This results in a very high third ionisation energy.
So, the correct answer is (B) : Alkaline earth metals.
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