Atomic StructureHard
Question
A nuceus 
emits one α particle and two β- particles. The resulting nucleus is
emits one α particle and two β- particles. The resulting nucleus is Options
A.
B.
C.
D.
Solution
When an alpha particle 
is emitted, the mass number and the atomic number of the daugther nucleus decreases by four and two respectively. When a beta particle (β-) is emitted, the atomic number of the daughter nucleus increases by one but the mass number remains the same.
∴
is emitted, the mass number and the atomic number of the daugther nucleus decreases by four and two respectively. When a beta particle (β-) is emitted, the atomic number of the daughter nucleus increases by one but the mass number remains the same. ∴
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