When α particle is emitted from any nucleus, its mass number and charge number are:
Correct answer: B. Decreases by 4, decreases by 2
- A. Increases by 2, increases by 2
- B. Decreases by 4, decreases by 2
- C. Decreases by 4, increases by 2
- D. Decreases by 4, decreases by 4
Explanation
An alpha particle is represented as ⁴₂He. So, removal of an alpha particle from a parent nuclei would decrease the mass number of the parent nuclei by 4 and decrease the charge of the parent nucleus by 2.
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