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प्रश्न
Why must an atom also contain positive charge?
विकल्प
To neutralise the negative charge of electrons
To produce the emanation of thorium
To give a continuous distribution of wavelengths
To increase the average spacing between atoms
MCQ
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उत्तर
Atoms as a whole are electrically neutral, while electrons carry negative charge. Positive charge must therefore be present to neutralise the negative charge of electrons.
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