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प्रश्न
Which of the following statement is always correct?
पर्याय
an atom has equal number of electrons and protons
an atom has equal number of electrons and neutrons
an atom has equal number of protons and neutrons
an atom has equal number of electrons, protons and neutrons
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उत्तर
An atom has equal number of protons and electrons
An atom always has equal number of protons and electrons in order to maintain electrical neutrality.
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संबंधित प्रश्न
Name three fundamental particles of the atom. Give the symbol with charge, on each particle.
TRUE \ FALSE
Electrons are present in the nucleus.
WRITE SHORT ANSWER
What is the number of neutrons present in a potassium atom ?
State whether the following statement is true or false :
The anode rays obtained from all the gases consist of positively charged particles called protons.
Compare an electron and a proton in respect of mass and charge.
State its one drawback of Rutherford’s atomic model.
Define the term Mass number.
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.
Write down the names of the particles represented by the following symbols and explain the meaning of superscript and subscript numbers attached.
`""_1"H"^1`, `""_0"n"^1`,`""_(-1)"e"^0`
