Calculate the number of protons , electrons and neutrons in the following.
(a) Chloride ion `(Cl^(-))` with `Z = 17,A =35`
(b) Aluminium ions`(Al^(3+)) ` with `Z = 13 , A=27`

Explanation

To solve the problem, we will calculate the number of protons, electrons, and neutrons for both the chloride ion (Cl⁻) and the aluminium ion (Al³⁺).

### (a) Chloride ion (Cl⁻) with Z = 17, A = 35

1. **Calculate the number of protons:**
- The number of protons is equal to the atomic number (Z).
- For Cl⁻, Z = 17.
- Therefore, the number of protons = 17.
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