Question:
Which one of the following group 16 elements does not exist in -2 oxidation state?
Which one of the following group 16 elements does not exist in -2 oxidation state?
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Down the group: non-metal → metalloid → metal → negative oxidation state becomes unstable
Updated On: May 2, 2026
- S
- Se
- O
- Po
- Te
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The Correct Option is D
Solution and Explanation
Concept:
Stability of oxidation states changes down the group
Step 1: General trend
• Lighter elements (O, S) prefer -2 state
• Heavier elements show metallic character
Step 2: Polonium
• Highly metallic
• Prefers +2 and +4 states
• -2 state is unstable Final Answer: \[ \boxed{\text{Po}} \]
Step 1: General trend
• Lighter elements (O, S) prefer -2 state
• Heavier elements show metallic character
Step 2: Polonium
• Highly metallic
• Prefers +2 and +4 states
• -2 state is unstable Final Answer: \[ \boxed{\text{Po}} \]
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