EASY
9th CBSE
IMPORTANT
Earn 100

What are nucleons?

Important Questions on Structure of the Atom

MEDIUM
9th CBSE
IMPORTANT
Give the electronic configuration of Cl- ion.
EASY
9th CBSE
IMPORTANT
Draw the atomic structure of helium atom.
EASY
9th CBSE
IMPORTANT
What is mass number of an atom? 
MEDIUM
9th CBSE
IMPORTANT
Find the valency of He24 and N714.
MEDIUM
9th CBSE
IMPORTANT
What are isotopes? Give its two applications.
MEDIUM
9th CBSE
IMPORTANT
An atom is electrically neutral. How can it become charged?
HARD
9th CBSE
IMPORTANT
Explain Rutherford's α-particle scattering experiment and give its observation and conclusion drawn.