MEDIUM
9th CBSE
IMPORTANT
Earn 100

What are the characteristics features of Thomson model of an atom?

Important Questions on Structure of Atom

EASY
9th CBSE
IMPORTANT
Modern's abc+ of SCIENCE CHEMISTRY FOR Class IX>Chapter 4 - Structure of Atom>Revision Exercise>Q 2
Define mass number.
EASY
9th CBSE
IMPORTANT
Modern's abc+ of SCIENCE CHEMISTRY FOR Class IX>Chapter 4 - Structure of Atom>Revision Exercise>Q 2
Define atomic number.
EASY
9th CBSE
IMPORTANT
Modern's abc+ of SCIENCE CHEMISTRY FOR Class IX>Chapter 4 - Structure of Atom>Revision Exercise>Q 3
How was neutron discovered?
MEDIUM
9th CBSE
IMPORTANT
Modern's abc+ of SCIENCE CHEMISTRY FOR Class IX>Chapter 4 - Structure of Atom>Revision Exercise>Q 4
Are relative masses of elements whole numbers? Explain.
EASY
9th CBSE
IMPORTANT
Modern's abc+ of SCIENCE CHEMISTRY FOR Class IX>Chapter 4 - Structure of Atom>Revision Exercise>Q 5
The maximum number of electrons in 1st shell is _____.
EASY
9th CBSE
IMPORTANT
Modern's abc+ of SCIENCE CHEMISTRY FOR Class IX>Chapter 4 - Structure of Atom>Revision Exercise>Q 5
The α-particles carry _____ units of positive charge.
EASY
9th CBSE
IMPORTANT
Modern's abc+ of SCIENCE CHEMISTRY FOR Class IX>Chapter 4 - Structure of Atom>Revision Exercise>Q 5
The neutron has _____ charge. (positive / no / negative)
EASY
9th CBSE
IMPORTANT
Modern's abc+ of SCIENCE CHEMISTRY FOR Class IX>Chapter 4 - Structure of Atom>Revision Exercise>Q 5
An atom has atomic mass number 23 and atomic number 11. The atom has _____ electrons.