EASY
9th CBSE
IMPORTANT
Earn 100

Which of the following is the electronic configuration of sulphur?

33.33% studentsanswered this correctly

Important Questions on Structure of the Atom

EASY
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 4 - Structure of the Atom>EXERCISES>Q A
The sum of the number of protons and neutrons in tritium, an isotope of hydrogen is
MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 4 - Structure of the Atom>EXERCISES>Q A

The number of electrons in an element X is 17 and the number of neutrons in X is18. Which of the following is the correct representation of the element?

MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 4 - Structure of the Atom>EXERCISES>Q A
Rutherford's α-particle scattering experiment showed that
i. Most of the space in an atom is empty.
ii. Neutron exists in the nucleus.
iii. The positive charge and mass of an atom are concentrated in the nucleus.
iv. Electrons have a negative charge.
EASY
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 4 - Structure of the Atom>EXERCISES>Q B
Anode rays originate from anode.
EASY
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 4 - Structure of the Atom>EXERCISES>Q B

When the pressure of the gas inside the discharge tube is 1atm, no current flows through the discharge tube.

EASY
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 4 - Structure of the Atom>EXERCISES>Q B
Neutrons are neutral particles having mass equal to that of an electron.
EASY
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 4 - Structure of the Atom>EXERCISES>Q B

Cathode rays consist of material particles.

EASY
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 4 - Structure of the Atom>EXERCISES>Q B

The chemical properties of an atom are determined by its valence electrons.