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Atomic number after a beta-emission from...

Atomic number after a `beta`-emission from a nucleus having atomic number 40, will be:

A

36

B

39

C

41

D

44

Text Solution

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The correct Answer is:
To solve the question regarding the atomic number after a beta emission from a nucleus with an atomic number of 40, we can follow these steps: ### Step-by-Step Solution: 1. **Understanding Beta Emission**: - In beta emission, a neutron in the nucleus is transformed into a proton, and a beta particle (which is an electron) is emitted. This process increases the atomic number of the element by 1. 2. **Identifying the Initial Atomic Number**: - The initial atomic number given in the question is 40. We can denote this nucleus as X, where X has an atomic number (Z) of 40. 3. **Applying the Beta Emission Process**: - After beta emission, the atomic number of the nucleus will increase by 1. Therefore, the new atomic number (Z') can be calculated as: \[ Z' = Z + 1 \] - Substituting the initial atomic number: \[ Z' = 40 + 1 = 41 \] 4. **Conclusion**: - The atomic number after beta emission from a nucleus with an atomic number of 40 will be 41. 5. **Selecting the Correct Option**: - From the given options (36, 39, 41, 44), the correct answer is 41. ### Final Answer: The atomic number after a beta emission from a nucleus having an atomic number of 40 will be **41**. ---
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