Question:
With which of the following electronic configuration of an atom has the lowest ionisation enthalpy?
With which of the following electronic configuration of an atom has the lowest ionisation enthalpy?
Updated On: May 1, 2024
- $1s^2 , 2s^2, 2p^5$
- $1s^2,2s^2 2p^3$
- $1s^2,2s^2 2p^6,3s^1$
- $1s^2 , 2s^2 2p^6$
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The Correct Option is C
Solution and Explanation
The electronic configuration $1s^2,2s^2 2p^6,3s^1$ shows lowest ionisation energy because this configuration is unstable due to the presence of one electron in s-orbital. Hence, less energy is required to remove the electron.
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Concepts Used:
Haloalkanes and Haloarenes - Classification
Classification of Haloalkanes and Haloarenes are as follows:
Haloalkanes and Haloarenes are Classified on the Basis of the Number of Halogen Atoms:
These are further classified as mono, di, or polyhalogen (tri-,tetra-, etc.) compounds depending on whether they contain one, two or more halogen atoms in their structures. For example;
- Monohaloalkane
- Dihaloalkane
- Trihaloalkane
Haloalkanes and Haloarenes are Classified on Compounds Containing sp3 C—X Bond (X= F, Cl, Br, I)
This class includes:
- Alkyl halides or haloalkanes (R—X)
- Allylic halides
- Benzylic halides
Haloalkanes and Haloarenes are Classified on Compounds Containing sp2 C—X Bond
This class includes:
- Vinylic halides
- Aryl halides