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प्रश्न
Fill in the blank of the following statement :
The electron has _________ charge, the proton has _________ charge, and the neutron has _________ charge.
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उत्तर
An electron has negative charge, a proton has positive charge, and a neutron has no charge.
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संबंधित प्रश्न
Fill in the blank
The outermost shell of an atom is known as............................
Fill in the blank
Neutrons are .......................... particles having mass equal to that of protons.
Compare an electron, a proton and a neutron in respect of their relative masses and charges.
Compare an electron and a proton in respect of mass and charge.
Compare a proton and a neutron in respect of mass and charge.
Define the term Mass number.
Explain how the modern atomic theory contradicted Dalton’s atomic theory.
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.
If an atom ‘A’ has an atomic number of eleven, state the number of protons and electrons it contains.
Select the correct answer from the choice in the bracket to complete the sentence:
An element ‘X’ has six electrons in its outer or valence shell. Its valency is __________.
