ICSE Class 9 Answered
What is radioactive substances? Give three examples of each radioactive element?
Asked by aditissingh02 | 20 May, 2019, 10:56: AM
In Radioactive substance, a radioactive atom spontaneously emits energetic particles ( alpha or beta ) and
electromagnetic waves (gamma radiation).
This radiation of particle and wave is emitted when an unstable (i.e. radioactive) nucleus transforms
to some other stable nucleus.
α-decay examples:-



β-decay examples :-



Gamma radiation is always accompanied by α-decay and β-decay
Answered by Thiyagarajan K | 20 May, 2019, 01:01: PM
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