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प्रश्न
What happens to the mass number of an element when (i) an α -particle, (ii) a β -particle, and (iii) γ -radiation is emitted?
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उत्तर
- When an α particle is emitted mass number decreases by 4.
- When a β particle is emitted there is no change in the mass number.
- When a γ radiation is emitted there is no change in the mass number.
संबंधित प्रश्न
Give one example of isobars.
A radioactive nucleus `""_"Z"^"A"` X first emits a beta particle and then an alpha particle to give the resulting nucleus `""_"Q"^"P"` Y What will be the values of P and Q in terms of A and Z?
A certain nucleus A (mass number 238 and atomic number 92) is radioactive and becomes a nucleus B (mass number 234 and atomic number 90) by the loss of one particle.
What particle was emitted?
How is a cathode ray beam affected while passing through a magnetic field?
State any two uses of cathode rays.
Are all the radiations viz. α, β and γ emitted in a single radioactive decay?
Justify with reason, whether the following nuclear reactions are allowed or not.
\[\ce{^A_Z X -> ^A_{Z - 2}X + ^4_{2}He}\]
From α, β and γ-rays, name the one which is not affected by electric or magnetic field?
A radioctive sample decays `7/8` times its original quantity in 15 minutes. The half-life of the sample is ______.
Complete the following radioactive reaction:
\[\ce{^-_-X -> ^-_-Y + ^4_2He -> ^234_91Z + ^0_-1e}\]
