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  3. Chemistry
  4. Which one of the following elements can have both positive and negative oxidation state ?

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Q. Which one of the following elements can have both positive and negative oxidation state ?

AFMCAFMC 1994The p-Block Elements - Part2

Solution:

He is a nobel gas with zero oxidation state. Li is a metal showing only +ve oxidation state of +1. F is the most electronegative element and shows only -1 oxidation sate.
I shows both + ve and -ve oxidation states.