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1. If A is a radioactive element which emits an α - particle and produces _{104}Rf^{259}. Write the atomic number and mass number of the element A.
In \alpha \ decay,
_{z}A^{a}\xrightarrow{\alpha\ decay}\ _{z-2}Y^{a-4}\ +\ _{2}He^{4}
2. What is the average energy released from a single fission process?
The average energy released from a single fission process is .
3. Which hazardous radiation is the cause for the genetic disease?
is the hazardous radiation that causes genetic disease.
4. What is the amount of radiation that may cause death of a person when exposed to it?
If a body is exposed to for an extended period of time, it leads to death.
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