For an `Al^(+3)` ion , if atomic number (Z) =13 and number of neutrons is 14 . Then the number of electrons in will be :-

Options

A. (a)13
B. (b)12
C. (c)10
D. (d)11

Answer

To find the number of electrons in the Al^(+3) ion, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Atomic Number (Z)**:
- The atomic number of aluminum (Al) is given as 13. This means that in a neutral atom of aluminum, there are 13 protons.

2. **Understand the Relationship Between Protons and Electrons**:
- In a neutral atom, the number of electrons is equal to the number of protons. Therefore, a neutral aluminum atom has 13 electrons.

3. **Consider the Charge of the Ion**:
- The question specifies that we are dealing with an Al^(+3) ion. The positive charge indicates that the ion has lost electrons. Specifically, a +3 charge means that 3 electrons have been lost.

4. **Calculate the Number of Electrons in the Ion**:
- Since the neutral aluminum atom has 13 electrons and the Al^(+3) ion has lost 3 electrons, we subtract 3 from 13:
\[ \text{Number of electrons in Al}^{(+3)} = 13 - 3 = 10 \]

5. **Conclusion**:
- Therefore, the number of electrons in the Al^(+3) ion is 10.

### Final Answer:
The number of electrons in the Al^(+3) ion is **10**.

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