Advertisements
Advertisements
प्रश्न
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
KNO3
Advertisements
उत्तर
KNO3 is the correct formula.
APPEARS IN
संबंधित प्रश्न
Write down the formulae of sodium sulphide.
What is the difference between 2H and H2 ?
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
The formula of carbonate of a metal M is M2CO3.
What will be the formula of its nitride ?
The formula of carbonate of a metal M is M2CO3.
What will be the formula of its phosphate ?
Give the formula and valency of:
chromate ………….…….. .
Give the formula and valency of:
cupric ………………… .
Give the empirical formula of Acetylene C2H2
Name the element in the compound and give the formula of the following compound:
Carbonic acid
Write the formula of the following compound:
Sodium chloride
Write the formula of the following compound:
Sodium carbonate
Write the formula of the following compound:
Sodium zincate
Write the formula of the following compound:
Sodium bicarbonate
Write the formula of the following compound:
Calcium bicarbonate
Write the formula of the following compound:
Calcium hydroxide
Write the formula of the following compound:
Magnesium chloride
Write the formula of the following compound:
Zinc oxide
Write the formula of the following compound:
Aluminium chloride
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.
