Saved Bookmarks
| 1. |
Which one of the following noble gas is obtained by radioactive disintegration ?A. KrB. ArC. RnD. Xe |
|
Answer» Correct Answer - C Rn is radioactive and is produced by the decay of radium and thorium minerals. `._88^226Rato._86^222Rn+._2^4He` it is a `gamma `- emitter. |
|