MCQ
Which one of the following elements shows both positive and negative oxidation states?
- ACesium
- BFluorine
- ✓Iodine
- DXenon
✓
Answer
Correct option: C.
Iodine
c
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 $3^{\text {rd }}$ 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.
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 $3^{\text {rd }}$ 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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