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

EASY
7th ICSE
IMPORTANT
Define Electronic configuration.

EASY
7th ICSE
IMPORTANT

EASY
7th ICSE
IMPORTANT
Define the following term:
Shell

EASY
7th ICSE
IMPORTANT

EASY
7th ICSE
IMPORTANT
Isobars

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

MEDIUM
7th ICSE
IMPORTANT
