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Among Group 16 elements, which one does NOT show -2 oxidation state?
Among Group 16 elements, which one does NOT show -2 oxidation state?
Updated On: Mar 27, 2026
- O
- Se
- Te
- Po
Show Solution
The Correct Option is D
Solution and Explanation
Group 16 elements, termed chalcogens, commonly exhibit oxidation states of -2, +2, +4, and +6. Oxygen (\(<\text{O}>\)), being the most electronegative, predominantly forms the -2 state. Electronegativity and atomic size changes down the group reduce the propensity for forming the -2 oxidation state.
Considering the provided choices:
- Oxygen (\(\text{O}\)): Typically exhibits a -2 oxidation state.
- Selenium (\(\text{Se}\)): Capable of a -2 oxidation state.
- Tellurium (\(\text{Te}\)): Also demonstrates a -2 oxidation state.
- Polonium (\(\text{Po}\)): Seldom forms a -2 oxidation state owing to its metallic character and inherent instability.
The conclusion is that Polonium (\(\text{Po}\)) does not characteristically display a -2 oxidation state, a consequence of its lower group position and inclination towards metallic characteristics over non-metallic ones.
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