EASY
9th CBSE
IMPORTANT
Earn 100

What is the valency of the element neon?

Important Questions on Structure of Atom

EASY
9th CBSE
IMPORTANT
How did Rutherford conclude that nucleus of an atom is massive ?
EASY
9th CBSE
IMPORTANT
What is the expected valency of sulphur (Z= 16)?
EASY
9th CBSE
IMPORTANT

Write the electronic distribution of the following elements:

(i) P1531                 (ii) Cl1735

EASY
9th CBSE
IMPORTANT
Out of proton and electron which is responsible for the characteristics of the elements.
EASY
9th CBSE
IMPORTANT
In a species, the number of electrons is more than the number of protons. Predict its nature.
MEDIUM
9th CBSE
IMPORTANT
Why are anode rays called positive rays?
MEDIUM
9th CBSE
IMPORTANT
Name the constituent of cathode rays. What is the magnitude of charge and mass present on it?