Question
Explain why, a solution of salt in water is considered a mixture and not a compound.
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| Ion | Valency(Charges) | Ion | Valency(Charge) |
| Sodium ion | $1+$ | Bromide ion | $1-$ |
| Ammonium ion | $1+$ | Hydroxide ion | $1-$ |
| Calcium ion | $2+$ | Sulphate ion | $2-$ |
| Lead ion | $2+$ | Phosphate ion | $3-$ |
| X | Y | ||
| Protons | = | 6 | 6 |
| Neutrons | = | 6 | 8 |