1. radon [ Synonyms: atomic number 86, rn] | |
A radioactive gaseous element formed by the disintegration of radium; the heaviest of the inert gasses; occurs naturally (especially in areas over granite) and is considered a hazard to health
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ایک تابکار بھاری گیسی عنصر۔ |
Prize Bonds Software in Pakistan The "Mega Prize Bonds" software allows searching of prize bonds in dif ... Read more