Chemistry · Nuclear Chemistry
निम्नलिखित में से कौन सा तत्व रेडियोधर्मी (radioactive) नहीं है?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Pb (सीसा)✓
- 2Po (पोलोनियम)
- 3Rn (रेडॉन)
- 4Ra (रेडियम)
सही उत्तर देखें
Pb (सीसा)
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