EASY
9th CBSE
IMPORTANT
Earn 100

The number of neutrons and protons present in the nuclei of two atomic species A and B are given below.
Atomic Species A B
Protons 8 8
Neutrons 8 10

Write the mass numbers of A and B.

Important Questions on Structure of the Atom

EASY
9th CBSE
IMPORTANT
The number of neutrons and protons present in the nuclei of two atomic species A and B are given below.
Atomic Species A B
Protons 8 8
Neutrons 8 10
     

What is the relation between two species?
EASY
9th CBSE
IMPORTANT
The number of neutrons and protons present in the nuclei of two atomic species A and B are given below.
Atomic Species A B
Protons 8 8
Neutrons 8 10

Write the electronic configuration of atoms A and B
MEDIUM
9th CBSE
IMPORTANT
What information do you get from the figure given below about the atomic number, mass number and valency of atom X ?
Question Image
EASY
9th CBSE
IMPORTANT
A certain species X has 17 protons, 18 electrons, and 20 neutrons.
What is such a particle called?
EASY
9th CBSE
IMPORTANT
A certain species Xhas 17 protons, 18 electrons, and 20 neutrons.
What is the mass number of X.
EASY
9th CBSE
IMPORTANT
A certain species X has 17 protons, 18 electrons, and 20 neutrons.
What is the atomic number of X.
MEDIUM
9th CBSE
IMPORTANT
If K and L-shells of an atom are full and in M-shell, there is only one electron, then what would be the total number of electrons in the atom? Name the element. Write the symbol and draw the Bohr model.
EASY
9th CBSE
IMPORTANT
The atom of an element has 17 protons, 17 electrons, and 18 neutrons.
Calculate the mass number of the element.