Chemistry · Atomic Structure/History
मैडम क्यूरी ने पिचब्लेंड से किस तत्व का निष्कर्षण किया था?
- 1रेडियम✓
- 2पोलोनियम
- 3थोरियम
- 4यूरेनियम
सही उत्तर देखें
रेडियम
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