HARD
7th ICSE
IMPORTANT
Earn 100

 Classify the radicals given into monovalent, divalent and trivalent. 

Ammonium, hydroxide, calcium, chloride, sulphate, carbonate, magnesium, oxide, phosphate, nitride, sulphide

Important Questions on Atomic Structure

MEDIUM
7th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 4 - Atomic Structure>Think & Answer>Q 1
What was the need of arrangements of elements in periodic table?
EASY
7th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 4 - Atomic Structure>Test Your Understanding>Q 1

Derive the formula of the following compound.

Hydrogen chloride

EASY
7th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 4 - Atomic Structure>Test Your Understanding>Q 2
Give the molecular formula of Calcium oxide.
MEDIUM
7th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 4 - Atomic Structure>Test Your Understanding>Q 3

Write the molecular formula of the following:

Calcium chloride

MEDIUM
7th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 4 - Atomic Structure>Test Your Understanding>Q 4

Write down the formula for the following compound:

Zinc chloride

MEDIUM
7th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 4 - Atomic Structure>EXERCISES>Q 1
The atomicities of ozone, sulphur, phosphorus and argon are respectively: 
MEDIUM
7th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 4 - Atomic Structure>EXERCISES>Q 2
The atomic theory of matter was proposed by:
MEDIUM
7th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 4 - Atomic Structure>EXERCISES>Q 3
One of the following elements has an atomicity of 'one'. This element is: