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KVPY2011PhysicsNuclear Physics

A nucleus of lead Pb ₈₂²¹⁴ emits two electrons followed by an alpha particle. The resulting nucleus will have

Options

  1. A82 protons and 128 neutrons
  2. B80 protons and 130 neutrons
  3. C82 protons and 130 neutrons
  4. D78 protons and 134 neutrons

Correct answer

A. 82 protons and 128 neutrons

Step-by-step solution

82 Proton 210-82=128 Neutron

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