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Question
Write the chemical formula of the following compound in a step-by-step manner –
Zinc hydroxide
Solution
Write the formula of
| Zinc hydroxide | Symbol | valency |
| Zinc | \[\ce{Zn}\] | \[\ce{2^+}\] |
| Hydroxide | \[\ce{OH}\] | \[\ce{1^-}\] |
Step I – Write each symbol with its valency.
Positive ion is written first
\[\ce{Zn}^{2+}\] \[\ce{[OH]}^{1-}\]
Step II – Interchange the valencies and ignoring signs.
The Formula is \[\ce{Zn[OH]2}\]
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| 2. An anion | B: Divalent |
| 3. A gaseous non-metal | C: Reactants |
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