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Shweta Thakur posted an Question
April 11, 2021 • 16:56 pm
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30 points
30 points
- IIT JAM
- Chemistry (CY)
Relation between electronegativity and oxidation state
relation between electronegativity and Oxidation State
3 Answer(s)
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Bhagat singh 1
answer. Electronegativity is simply a measure of an ability of an atom to attract electrons in a covalent framework. So keeping in mind that like charges repel (electrons repel electrons).. it follows that elements in a high oxidation state are more electronegative - i.e. more able to attract and stabilize electrons.
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Dinesh khalmaniya 1
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Electronegativity is simply a measure of an ability of an atom to attract electrons in a covalent framework. So keeping in mind that like charges repel (electrons repel electrons) ... it follows that elements in a high oxidation state are more electronegative - i.e. more able to attract and stabilize electrons. High oxidation state elements have essentially been "robbed" of their electrons and likely bear some degree of partial positive charge ... this is "good" for attracting and stabilizing nearby electrons. Conversely consider a lone pair - which is defined to have an electronegativity of 0. Lone pairs cannot stabilize other electrons and don't attract other electrons to themselves ... the electron-electron repulsion would be too great.
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Priyanshu kumar Best Answer
Electronegativity is simply a measure of an ability of an atom to attract electrons in a covalent framework. So keeping in mind that like charges repel (electrons repel electrons) ... it follows that elements in a high oxidation state are more electronegative - i.e. more able to attract and stabilize electrons
Because electronegativity dictates the distribution of electrons in a molecule, it can also help you determine oxidation numbers. For example, consider a water molecule. The oxygen atom has an electronegativity of 3.5, whereas each hydrogen atom has an electronegativity of 2.2. Therefore, this molecule is polar, and the oxygen atom attracts the electrons away from the hydrogen atoms. This imbalance is reflected in the oxidation numbers. Oxygen in a water molecule has an oxidation number of -2, whereas each hydrogen atom has an oxidation number of +1. In general, the atom with a larger electronegativity will have a negative oxidation number, and the atom with a smaller electronegativity will have a positive oxidation number.
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