Advertisements
Advertisements
Question
Fill in the blank
The outermost shell of an atom is known as............................
Solution
The outermost shell of an atom is known as valence shell.
APPEARS IN
RELATED QUESTIONS
Mention briefly the salient features of Dalton’s atomic theory (five points)
Explain the rule with example according to which electrons are filled in various energy levels
What are the two main parts of which an atom is made of?
FILL IN THE BLANK
The γ-rays are............................ radiations, like light.
Tick the most appropriate answer.
Which of the following scientists observed that cathode rays consists of negatively charged particles?
- John Dalton
- J J Thomson
- James Chadwick
- Democritus
TRUE \ FALSE
Electrons are present in the nucleus.
Compare an electron and a proton in respect of mass and charge.
Define the term Nucleons.
With reference to the discovery of the structure of an atom, explain in brief – William Crookes experiment for the discovery of cathode rays, followed by – J.J. Thomsons experiment pertaining to the constituents of the cathode rays. State which sub-atomic particle was discovered from his experiment.
What is meant by the term subatomic particles?
