Advertisements
Advertisements
प्रश्न
Name the element in the compound and give the formula of the following compound:
Green vitriol
Advertisements
उत्तर
| Element | Element in compound | Formula |
| Green vitriol | Iron, sulphur, oxygen, hydrogen | FeSO4. 7H2O |
APPEARS IN
संबंधित प्रश्न
Write the chemical formula of the Magnesium chloride.
Explain the difference between 2N and N2.
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 ?
(a) Write the symbols/formulae of two simple ions and two compound ions (or polyatomic ions).
An element Y has a valency of 4. Write the formula for its :
- chloride
- oxide
- sulphate
- carbonate
- nitrate
Identify the following substance:
Gas C that is colourless and can be used as a bleaching agent.
Write the formula of the following compound:
Potassium dichromate
Write the formula of the following compound:
Sodium bisulphate
Write the formula of the following compound:
Sodium dichromate
Write the formula of the following compound:
Sodium hydroxide
Write the formula of the following compound:
Magnesium nitrate
Write the formula of the following compound:
Aluminium hydroxide
Write the formula of the following compound:
Iron [III] oxide
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
Mg(SO4)2
Write the chemical formula for the following elements.
- Hydrogen
- Nitrogen
- Ozone
- Sulphur
Write the chemical formula for the following compounds
- Aluminium sulphate
- Silver nitrate
- Magnesium oxide
- Barium chloride
Write the molecular formulae for the following compounds
Copper (II) bromide
Write the molecular formulae for the following compounds
Calcium (II) phosphate
Play a game for writing formula.
Example 2: A low-cost model for writing formulae: Take empty blister packs of medicines. Cut them in groups according to the valency of the element, as shown in the figure. Now, you can make formulae by fixing one type of ion into other.
For example:
The formula for sodium sulphate:
2 sodium ions can be fixed on one sulphate ion.
Hence, the formula will be Na2SO4.
Do it yourself:
Now, write the formula of sodium phosphate.
