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SURA PUBLICATION-NUCLEAR PHYSICS-ADDITIONAL QUESTIONS & ANSWER (FILL IN THE BLANKS)
- Henry Becquerel discovered in 1896.
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- is a radioactive element.
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- Radium emitted radiations spontaneously like .
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- is known as an ore of uranium.
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- elements emit harmful radioactive radiations.
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- The nucleus of some elements is .
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- The nucleus undergo nuclear decay to get converted into a more .
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- Promethium with atomic number.
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- radioactive substances have been discovered so far.
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- The atomic number of Cu is .
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- The atomic number of Cobalt is .
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- The atomic number of Chromium is .
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- The atomic number of Cadmium is .
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- The atomic number of Boron is .
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- The atomic number of carbon is .
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- The atomic number of hydrogen is .
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- One roentgen produces a charge of coulomb in 1kg of air.
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- The atomic number of oxygen is .
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- The ionizing power of alpha rays is 10,000 times greater than .
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- alpha-rays are charged.
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