MEDIUM
9th CBSE
IMPORTANT
Earn 100

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?

Important Questions on Atoms and Molecules

MEDIUM
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Short Answer Type Questions>Q 15
An element X has a valency of 4 where as another element Y has a valency 1. What will be the formula of the compound formed between X and Y? 
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Short Answer Type Questions>Q 16
An element B shows valencies 4 and 6, write the formulae of its two oxides.
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Short Answer Type Questions>Q 17
An element X of valency 3 combines with another element Y of valency 2. What will be the formula of the compound formed? 
HARD
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Short Answer Type Questions>Q 18
Work out the formula for magnesium hydrogen carbonate.
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Short Answer Type Questions>Q 19

An element X has valency 2. Write the simplest formula for the bromide of the element. 

MEDIUM
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Short Answer Type Questions>Q 19

An element X has valency 2. Write the simplest formula for the oxide of the element.

MEDIUM
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Short Answer Type Questions>Q 20

Work out the formula for the following compound.

Sodium oxide

MEDIUM
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Short Answer Type Questions>Q 20

Work out the formula for the following compound:

Calcium carbonate