EASY
7th ICSE
IMPORTANT
Earn 100

The valency of calcium is two and that of oxygen is also two. Write down the molecular formula of calcium oxide.

Important Questions on Atomic Structure

EASY
7th ICSE
IMPORTANT
The valency of hydrogen in H2O is 1. What is the valency of magnesium in MgO.
EASY
7th ICSE
IMPORTANT

Define Electronic configuration.

EASY
7th ICSE
IMPORTANT
Define homoatomic molecules.
EASY
7th ICSE
IMPORTANT

Define the following term:

Shell

EASY
7th ICSE
IMPORTANT
Define the following.
Isobars
MEDIUM
7th ICSE
IMPORTANT

What are protons? Where do they lie in an atom?

MEDIUM
7th ICSE
IMPORTANT
What are electrons? Where do they lie in an atom?