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प्रश्न
Write the formula of the following compound:
Zinc oxide
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उत्तर
Zinc oxide - ZnO - `"Zn"^(2+)["O"]^(2-)`
संबंधित प्रश्न
The radius of an oxygen atom is 0.073 nm. What does the symbol ‘nm’ represent ?
What do the following abbreviations stand for ?
- O
- 2O
- O2
- 3O2
Write down the formulae for the following compounds :
Calcium oxide
An element Z has a valency of 3. What is the formula of oxide of Z ?
An element X has a valency of 4 whereas another element Y has a valency of 1. What will be the formula of the compound formed between X and Y ?
An element Y has a valency of 4. Write the formula for its :
- chloride
- oxide
- sulphate
- carbonate
- nitrate
The formula of a compound is X3Y. The valencies of elements X and Y will be respectively :
XCl2 is the chloride of a metal X. State the formula of the sulphate and the hydroxide of the metal X.
Write the formula of the following compound:
Potassium permanganate
Write the formula of the following compound:
Potassium nitrite
Write the formula of the following compound:
Potassium bisulphite
Write the formula of the following compound:
Sodium sulphate
Write the formula of the following compound:
Magnesium nitrate
Write the formula of the following compound:
Zinc chloride
Write the formula of the following compound:
Aluminium sulphate
Define the term Relative molecular mass. State why indirect methods are utilised to determine the absolute mass of an atom. Explain in brief the indirect method used.
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
NaZnO2
Find the valency of the element which is underlined in the following formula.
- NaCl
- CO2
- Al (PO4)
- Ba (NO3)2
- CaCl2
Write the molecular formulae for the following compounds
Iron (III) sulphide
Derive the chemical formula for calcium chloride.
