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NTA Abhyas JEE Main2020PhysicsNuclear PhysicsPractice

When aluminium is bombarded with fast neutrons, it changes into sodium with emission of particle x according to the equation Al 13 27 + 0 1 n → 11 24 Na + x What is x ?

Options

  1. AElectron
  2. BProton
  3. CNeutron
  4. DAlpha- particle

Correct answer

D. Alpha- particle

Step-by-step solution

The mass number of x = 27 + 1 - 24 = 4 and its atomic number = 13 + 0 - 11 = 2 . Hence particle x is the helium nucleus, which is called an alpha particle

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