Advertisements
Advertisements
प्रश्न
Write the formula of the following compound:
Sodium chloride
Advertisements
उत्तर
Sodium chloride - NaCl - `"Na"^(1+)"Cl"^(1-)`
APPEARS IN
संबंधित प्रश्न
Write down the formulae of sodium oxide.
What is meant by the symbol of an element ? Explain with examples.
An element Z has a valency of 3. What is the formula of oxide of Z ?
If the valency of carbon is 4 and that of sulphur is 2, work out the formula of the compound formed by the combination of carbon with sulphur. What is the name of this compound ?
Give the formulae of the compounds formed from the following sets of elements :
- calcium and fluorine
- hydrogen and sulphur
- nitrogen and hydrogen
- carbon and chlorine
- sodium and oxygen
- carbon and oxygen
(a) Write the symbols/formulae of two simple ions and two compound ions (or polyatomic ions).
Name the element in the compound and give the formula of the following compound:
Carbonic acid
Name the element in the compound and give the formula of the following compound:
Glauber’s salt
Write the formula of the following compound:
Potassium hydroxide
Write the formula of the following compound:
Potassium iodide
Write the formula of the following compound:
Sodium sulphate
Write the formula of the following compound:
Sodium hydroxide
Write the formula of the following compound:
Sodium iodide
Write the formula of the following compound:
Zinc nitrate
Write the formula of the following compound:
Copper [I] sulphide
Write the formula of the following compound:
Iron [II] sulphate
Write the molecular formulae for the following compounds
Calcium (II) phosphate
Write the molecular formulae for the following compounds
Iron (III) sulphide
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.
