EASY
9th CBSE
IMPORTANT
Earn 100

What is a proton? State its relative mass and charge.

Important Questions on Structure of Atom

HARD
9th CBSE
IMPORTANT
What is the absolute mass and charge of a proton? 
MEDIUM
9th CBSE
IMPORTANT
How does a proton differ from an electron? 
MEDIUM
9th CBSE
IMPORTANT
State two observations which show that atom is not indivisible.
MEDIUM
9th CBSE
IMPORTANT
All the gases form cathode rays and anode rays when electricity is passed through them: What does the formation of cathode rays tell us about the atoms?
MEDIUM
9th CBSE
IMPORTANT
All the gases form cathode rays and anode rays when electricity is passed through them:  What does the formation of anode rays tell us about the atoms? 
MEDIUM
9th CBSE
IMPORTANT
What do you understand by the term "electronic configuration" of an element? Write down the electronic configuration of oxygen (Atomic Number= 8).
MEDIUM
9th CBSE
IMPORTANT
An element has an atomic number 12. How many electrons will be present in the K, L and M energy shells of its atom?
MEDIUM
9th CBSE
IMPORTANT
What is the nucleus of an atom and what is the nature of a charge on it?