Advertisements
Advertisements
प्रश्न
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
BaCl2
उत्तर
BaCl2 is the correct formula.
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 ....................
What is meant by a chemical formula ? Write the formulae of one element and one compound.
What do the following abbreviations stand for ?
- O
- 2O
- O2
- 3O2
An element Z has a valency of 3. What is the formula of oxide of Z ?
Define ‘formula unit’ of an ionic compound. What is the formula unit of (i) sodium chloride, and
(ii) magnesium chloride ?
Give the empirical formula of : Benzene C6H6
Give the empirical formula of Acetylene C2H2
Name the element in the compound and give the formula of the following compound:
Green vitriol
Name the element in the compound and give the formula of the following compound:
Ethane
Write the formula of the following compound:
Potassium permanganate
Write the formula of the following compound:
Potassium zincate
Write the formula of the following compound:
Calcium carbonate
Write the formula of the following compound:
Calcium bisulphite
Write the formula of the following compound:
Calcium sulphite
Write the formula of the following compound:
Magnesium hydroxide
Write the formula of the following compound:
Zinc hydroxide
Write the formula of the following compound:
Iron [III] chloride
Write the formula of the following compound:
Iron [II] oxide
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
NaCO3
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.