NCERT Solutions for Chapter: Structure of the Atom, Exercise 8: Exercises

Author:NCERT

NCERT Science Solutions for Exercise - NCERT Solutions for Chapter: Structure of the Atom, Exercise 8: Exercises

Attempt the practice questions on Chapter 4: Structure of the Atom, Exercise 8: Exercises with hints and solutions to strengthen your understanding. SCIENCE TEXTBOOK FOR CLASS IX solutions are prepared by Experienced Embibe Experts.

Questions from NCERT Solutions for Chapter: Structure of the Atom, Exercise 8: Exercises with Hints & Solutions

EASY
9th CBSE
IMPORTANT

J. J. Thomson proposed that the nucleus of an atom contains only nucleons.

EASY
9th CBSE
IMPORTANT

 A neutron is formed by an electron and a proton combining together. Therefore, it is neutral.

MEDIUM
9th CBSE
IMPORTANT

The mass of an electron is about 12000 times that of proton.

EASY
9th CBSE
IMPORTANT

An isotope of iodine is used for making tincture of iodine which is used as a medicine.

EASY
9th CBSE
IMPORTANT

Rutherford's alpha-particle scattering experiment was responsible for the discovery of

EASY
9th CBSE
IMPORTANT

Isotopes of an element have:

EASY
9th CBSE
IMPORTANT

Number of valence electrons in Cl- ion is

EASY
9th CBSE
IMPORTANT

Which one of the following is a correct electronic configuration of sodium?