Advertisements
Advertisements
Question
Write the chemical formula of the following compound in a step-by-step manner –
Potassium permanganate
Advertisements
Solution
Write the formula of
| Potassium permanganate | Symbol | valency |
| Potassium | \[\ce{K}\] | \[\ce{1^+}\] |
| permanganate | \[\ce{MnO4}\] | \[\ce{1^-}\] |
Step I – Write each symbol with its valency.
Positive ion is written first
\[\ce{K}^{1+}\] \[\ce{[MnO4]}^{1-}\]
Step II – Interchange the valencies and ignoring the (+) and (−) signs.
The Formula is \[\ce{KMnO4}\]
APPEARS IN
RELATED QUESTIONS
Write the molecular formulae of Copper oxide.
Write the molecular formulae for the following compounds and name the elements present of Common salt.
Write the molecular formulae of Hydrogen nitrate (nitric acid).
Write the molecular formulae of Hydrogen sulphate (sulphuric acid).
Write the chemical formula of the following compound in a step-by-step manner –
Potassium chloride
Write the chemical formula of the following compound in a step-by-step manner –
Calcium hydroxide
Write the chemical formula of the following compound in a step-by-step manner –
Potassium dichromate
Write the chemical formula of the following compound in a step-by-step manner –
Iron [III] chloride
Write the chemical formula of the following compound in a step-by-step manner –
Iron [III] oxide
Match the statements – 1 to 10 below with their correct answers from – A to J.
| Column I | Column II |
| 1. Elements having valency of two. | A: Br1− |
| 2. An anion | B: Divalent |
| 3. A gaseous non-metal | C: Reactants |
| 4. A cation. | D: Ammonium |
| 5. The term used for the substances which take part in the chemical reaction | E: Nitric oxide |
| 6. The meaning of the symbol ‘Δ’ over the arrow in a chemical equation. | F: Nitrogen |
| 7. The chemical name for nitrogen monoxide. | G: Zero |
| 8. A radical containing nitrogen and hydrogen only | H: Nitrous oxide |
| 9. The chemical name for dinitrogen oxide | I: Heat required |
| 10. The valency of noble gases | J: K1+ |
