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प्रश्न
Give the following a suitable word/phrase.
The electrons present in the outermost shell.
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उत्तर
This outermost shell is known as the valence shell, and the electrons found in it are called valence electrons.
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संबंधित प्रश्न
Fill in the blank
Neutrons are .......................... particles having mass equal to that of protons.
Give the following a suitable word/phrase
The sub-atomic particle with negative charge and negligible mass.
Give the following a suitable word/phrase.
The smallest unit of an element which takes part in a chemical reaction.
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Gases become good conductors of electricity under ........ (low/high) pressure and .............. (low/high) voltage electrical discharge.
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The electrons revolving in shells close to the nucleus are called ................... electrons.
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The γ-rays are............................ radiations, like light.
ANSWER IN DETAIL
What is the maximum number of electrons that L shell can accommodate ? Give reasons for your answer.
Why is an atom neutral inspite of the presence of charged particles in it?
Compare an electron, a proton and a neutron in respect of their relative masses and charges.
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.
