Question
रेडॉन क्या है?
Answer
रेडॉन शून्य वर्ग का रेडियोऐक्टिव तत्व है जो एक अक्रिय गैस है परमाणु क्रमांक 86, परमाणु भार 222, प्रतीक Rn.Subscribe to our youtube channel!
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