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प्रश्न
What do you mean by Atomic mass
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उत्तर
Atomic mass of element is the relative mass of its atom as compared to the mass of carbon atom taken as 12.
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संबंधित प्रश्न
Represent the change in the nucleus of a radioactive element when a β particle is emitted.
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Name a common device where a hot cathode ray tube is used.
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Unit of radioactivity is _______
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