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Manipal MET2011PhysicsNuclear Physics

As a result of radioactive decay ₉₂ U ²³⁸ is converted into ₉₁ ~Pa ²³⁴ . The particles emitted during this decay are

Options

  1. Aa proton and a neutron
  2. Ba proton and two -particles
  3. Can -particle and a -particle
  4. Dtwo -particles and a proton

Correct answer

C. an -particle and a -particle

Step-by-step solution

Decrease in mass number =238-234=4 No. of -particles emitted = 4 4 =1 Decrease in atomic number due to emission of 1 -particle is 2 , but now atomic number is 91. Hence, number of -particles = 91+2 - 92 = 1 .

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