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Question

What is β -decay? Give an example.

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Solution

β-decay: When a radioactive nucleus disintegrates by emitting a β-particle, the atomic number increases by one and the mass number remains the same. β-decay can be expressed as
ZXAZ+1YA+1e0
Example : Thorium (90Th234) is converted to protoactinium (91Pa234) due to β-decay
90Th23491Pa234+1e0

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