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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
State the energy conversion taking place in a cathode ray tube
Complete the diagram as given above by drawing the deflection of radioactive radiations in an electric field
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Give a scientific explanation.
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Name two radioactive substances.
State two characteristics of the substance used as thermionic emitter.
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In U238 ore containing Uranium the ratio of U234 to Pb206 nuclei is 3. Assuming that all the lead present in the ore is final stable product of U238. Half life of U238 to be 4.5 × 109 years and the age of ore is ______ × 109 years. (in 109 years)
Complete the following radioactive reaction:
\[\ce{^-_-X -> ^-_-Y + ^4_2He -> ^234_91Z + ^0_-1e}\]
