Advertisements
Advertisements
Question
Write the formula of the following compound:
Potassium nitrite
Advertisements
Solution
Potassium nitrite - KNO2 - `"NO"_2^(1-)`
APPEARS IN
RELATED QUESTIONS
Which of the following represents a correct chemical formula ?
An element A forms an oxide A2O5.
What will be the formula of chloride of A ?
The formula of the nitride of a metal X is XN, state the formula of :
- its sulphate
- its hydroxide.
Name the element in the compound and give the formula of the following compound:
Green vitriol
Write the formula of the following compound:
Potassium dichromate
Write the formula of the following compound:
Potassium plumbite
Write the formula of the following compound:
Sodium sulphite
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:
Calcium nitrate
Write the formula of the following compound:
Zinc oxide
Write the formula of the following compound:
Iron [III] chloride
Write the formula of the following compound:
Iron [II] sulphate
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.
(NH4)3SO4
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
Ca2(PO4)3
Write the molecular formulae for the following compounds
Mercury (II) chloride
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.
