MCQ
Most of the radio active elements are present in:
- ALanthanoids
- BActinoids
- CRepresentative elements
- DSecond transition series
✓
Answer
- Actinoids
Explanation:
The actinoids are radioactive elements and the earlier members have relatively long half-lives.
The most common and known element is Uranium, which is used as nuclear fuel when its converted into plutonium, through a nuclear reaction.
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