MEDIUM
9th CBSE
IMPORTANT
Earn 100

Name the particles present in the nucleus of an atom, other than proton and neutron.

Important Questions on Structure of the Atom
HARD
9th CBSE
IMPORTANT
Which element will be more reactive- the element whose atomic number is 18 or the one whose atomic number is 19? Give reasons.

MEDIUM
9th CBSE
IMPORTANT
Which of the following elements have only two electrons in their outermost orbit?

EASY
9th CBSE
IMPORTANT
The atom of which of the following does not contain a neutron in the nucleus?

MEDIUM
9th CBSE
IMPORTANT
Justify that the protons are the constituents of all atoms.

MEDIUM
9th CBSE
IMPORTANT
Calculate the number of electrons which will have the mass of 1g.

HARD
9th CBSE
IMPORTANT
Justify that cathode rays originate from cathode in a discharge tube whereas anode rays do not.

EASY
9th CBSE
IMPORTANT

EASY
9th CBSE
IMPORTANT
