Advertisements
Advertisements
Question
Write the formula of the following compound:
Potassium dichromate
Advertisements
Solution
Potassium dichromate - K2Cr2O7 - `"K"^1["Cr"_2"O"_7]^(2-)`
APPEARS IN
RELATED QUESTIONS
Write down the formulae for the following compounds :
Calcium oxide
An element X has a valency of 4 whereas another element Y has a valency of 1. What will be the formula of the compound formed between X and Y ?
An element X of valency 3 combines with another element Y of valency 2. What will be the formula of the compound formed ?
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
Which of the following represents a correct chemical formula ?
The formula of carbonate of a metal M is M2CO3.
What will be the formula of its iodide ?
The formula of carbonate of a metal M is M2CO3.
What will be the formula of its phosphate ?
Name the element in the compound and give the formula of the following compound:
Nitric acid
Name the element in the compound and give the formula of the following compound:
Acetic acid
Write the formula of the following compound:
Sodium nitrate
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 [II] chloride
Write the formula of the following compound:
Copper [I] sulphide
Write the formula of the following compound:
Iron [III] chloride
Write the formula of the following compound:
Iron [II] hydroxide
Write the molecular formulae for the following compounds
Copper (II) bromide
Derive the chemical formula for calcium chloride.
Play a game for writing formula.
Example 1: Make placards with symbols and valencies of the elements separately. Each student should hold two placards, one with the symbol in the right hand and the other with the valency in the left hand. Keeping the symbols in place, students should criss-cross their valencies to form the formula of a compound.
