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प्रश्न
उत्तर
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.
Represent the change in the nucleus of a radioactive element when a β particle is emitted.
What is thermionic emission?
What do you mean by Atomic mass
Define bound electrons.
What are cathode rays? Why are they called ‘cathode rays’? Name a material which exhibits fluorescence when cathode rays fall on it.
What is meant by Radioactivity?
State one use of radio-isotopes.
A radioactive nucleus \[\ce{^A_ZX}\] undergoes spontaneous decay in the sequence \[\ce{^A_ZX -> _{Z-1 }B -> _{Z-3}C -> _{Z-2}D }\], where Z is the atomic number of element X. The possible decay particles in the sequence are ______.
Calculate the time interval between 33% decay and 67% decay if half-life of a substance is 20 minutes.
