Advertisements
Advertisements
प्रश्न
Write the formula of the following compound:
Iron [III] hydroxide
Advertisements
उत्तर
Iron [III] hydroxide - Fe[OH]3 - `"Fe"^(3+)"OH"^(1-)`
APPEARS IN
संबंधित प्रश्न
Write the chemical formula of the Copper nitrate.
Explain the difference between 2N and N2.
What do the symbols, H2, S and O4 mean in the formula H2SO4 ?
An element B shows valencies of 4 and 6. Write the formulae of its two oxides.
Name the following compounds. Also write the symbols/formulae of the ions present in them :
- CuSO4
- (NH4)2SO4
- Na2O
- Na2CO3
- CaCl2
Define ‘formula unit’ of an ionic compound. What is the formula unit of (i) sodium chloride, and
(ii) magnesium chloride ?
An element A forms an oxide A2O5.
What will be the formula of chloride of A ?
Write the formula of the following compound:
Potassium dichromate
Write the formula of the following compound:
Sodium sulphite
Write the formula of the following compound:
Sodium dichromate
Write the formula of the following compound:
Sodium permanganate
Write the formula of the following compound:
Calcium chloride
Write the formula of the following compound:
Zinc sulphate
Write the formula of the following compound:
Silver [I] chloride
Define the term Relative atomic mass. State why indirect methods are utilised to determine the absolute mass of an atom. Explain in brief the indirect method used.
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
NaZnO2
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
NaCO3
Write the molecular formulae for the following compounds
Iron (III) sulphide
Derive the chemical formula for calcium 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.
