Give an example of an element which can exhibit both positive and negative valency
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Iodine
The atomic size of Iodine is very big and it has empty d orbitals to expand it's electron in s and p orbitals In 3
rd
excited state iodine has 7 unpaired electrons so it can show positive oxidation state with higher electronegative element like Cl,Br,F. Generally all halogens exhibit negative oxidation state due to their electronegativity.
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Answered by
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excited state iodine has 7 unpaired electrons so it can show positive oxidation state with higher electronegative element like Cl,Br,F. Generally all halogens exhibit negative oxidation state due to their electronegativity.
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