Explain why an iron ion is attracted to a sulfide ion but not to a zinc ion

Metal ions tend to lose their electrons and form positive ions. Both iron and zinc are metals, so they both form ions that are positively charged. However, ions with the same charge repel each other. That is why an iron ion is not attracted to a zinc ion.

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Explanation:

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.