Advertisements
Advertisements
प्रश्न
Explain the term ‘variable valency’.
Advertisements
उत्तर
“When an element has more than one valency, its valency is called variable valency.”
APPEARS IN
संबंधित प्रश्न
Write the molecular formula for the oxide and sulphide of following elements of Calcium
Write the molecular formulae of Iron (III) chloride
Write the molecular formulae of Iron (II) sulphide.
Write the molecular formulae of Calcium hydroxide.
Explain the term ‘symbol’.
Write the chemical formula of the following compound in a step-by-step manner –
Sodium zincate
Write the chemical formula of the following compound in a step-by-step manner –
Copper [II] oxide
Write the chemical formula of the following compound in a step-by-step manner –
Iron [III] oxide
Complete the statement given below by filling in the blank with the correct word.
The formula of silver [I] chloride is ________.
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+ |
