It has been observed that Thorium (_90234)Th is transformed into Protactinium (_91234)Pa after the emission of particle:
Correct answer: B. Beta
- A. Alpha
- B. Beta
- C. Gamma
- D. Alpha, Beta, Gamma
Explanation
When a β-particle is emitted out of any nucleus, then its mass number does not change but its charge number is increases by one. In this case, Thorium (90Th²³⁴) is transformed into proctactanium (91Pa²³⁴) after the emission of β-particle.
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