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प्रश्न
During the emission of a beta particle, the ______ number remains same.
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उत्तर
During the emission of a beta particle, the mass number remains same.
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संबंधित प्रश्न
An element `""_ZS^A` decays to `""_85R^222` after emitting 2 α particles and 1 β particle.
Find the atomic number and atomic mass of the element S.
Complete the diagram as given above by drawing the deflection of radioactive radiations in an electric field
Define bound electrons.
From α, β and γ-rays, name the one which is not affected by electric or magnetic field?
Explain, why radium paint, consisting of zinc sulphide and a trace of radium salt, glows in the dark?
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)
The mean lives of a radioactive substance are 1620 and 405 years for β-emission and β-emission respectively. The time after which three fourth of a sample will decay if it is decaying both by β-emission and β-emission simultaneously will be ______ years.
(Take ln 2 = 0.693)
Assertion (A): Hydrogen atom consists of only one electron but its emission spectrum has may lines.
Reason (R): Only Lyman series is found in the absorption spectrum of hydrogen atom whereas in the emission spectrum, all the series are found.
