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प्रश्न
Give the following a suitable word/phrase.
The sum of the number of protons and neutrons of an atom.
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उत्तर
Mass number
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संबंधित प्रश्न
Write true or false for the following statement
The maximum number of electrons in the first shell can be 8.
Give the following a suitable word/phrase
The sub-atomic particle with negative charge and negligible mass.
Give the following a suitable word/phrase
Arrangement of electrons in the shells of an atom.
Multiple Choice Questions
The outermost shell of an atom is known as
Name three fundamental particles of the atom. Give the symbol with charge, on each particle.
ANSWER IN DETAIL
What is the maximum number of electrons that L shell can accommodate ? Give reasons for your answer.
Define the term Valence shell.
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.
Explain in brief – Goldstein’s experiment which led to the discovery of the proton.
State how electrons are distributed in an atom. Explain in brief the rules which govern their distribution.
