Advertisements
Advertisements
प्रश्न
Write the chemical formula of the Calcium oxide.
Advertisements
उत्तर
Calcium oxide → CaO
| Element Name | Calcium |
| Element Symbol | Ca |
| Charge | +2 |
| Valency | 1 Ca |
Hence the formula: CaCl2
APPEARS IN
संबंधित प्रश्न
Fill the following blanks with suitable words :
In a chemical reaction, the sum of the masses of the reactants and the products remains unchanged. This is called ....................
Write chemical formula of the sulphate of Aluminium, Ammonium and Zinc.
Fill in the blank:
Formula of iron (ill) carbonate is _____ .
Write the formula of the following compound:
Potassium iodide
Write the formula of the following compound:
Magnesium hydroxide
Write the formula of the following compound:
Iron [III] chloride
Write the formula of the following compound:
Lead [II] chloride
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.
Write the molecular formulae for the following compounds
Magnesium (II) acetate
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.
