Question:
Among the following the third ionization energy is highest for
Among the following the third ionization energy is highest for
Updated On: Jun 14, 2022
- magnesium
- boron
- beryllium
- aluminium
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The Correct Option is C
Solution and Explanation
The electronic configuration of the given elements is as
${ }_{12} Mg =[ Ne ] 3 s^{2}$
${ }_{5} B =[ He ] 2 s^{2}, 2 p^{1}$
${ }_{4} Be =[ He ] 2 s^{2}$
${ }_{13} Al =[ Ne ] 3 s^{2} 3 p^{1}$
From the electronic configuration, it is clear that third ionisation energy of $Mg$ and $Be$ is higher as compared to $Al$ and $B$ as in them the third electron have to be removed from the stable inert gas configuration.
Between Mg and Be, third $IE$ of $Be$ is higher because of its smaller size.
${ }_{12} Mg =[ Ne ] 3 s^{2}$
${ }_{5} B =[ He ] 2 s^{2}, 2 p^{1}$
${ }_{4} Be =[ He ] 2 s^{2}$
${ }_{13} Al =[ Ne ] 3 s^{2} 3 p^{1}$
From the electronic configuration, it is clear that third ionisation energy of $Mg$ and $Be$ is higher as compared to $Al$ and $B$ as in them the third electron have to be removed from the stable inert gas configuration.
Between Mg and Be, third $IE$ of $Be$ is higher because of its smaller size.
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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