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Manipal MET2020PhysicsNuclear Physics

The mass number of an atom is 15 and its atomic number is 7 . Now, this atom absorbs an' -particle and emits a proton. What will be the mass number of changed atom?

Options

  1. A16
  2. B18
  3. C17
  4. D15

Correct answer

B. 18

Step-by-step solution

gathered ₀ ₇ X¹⁵+ ₂ He ^4 ₉ Y¹⁹ ₉ Y¹⁹ ₈ Z¹⁸+ ₁ H^1 gathered According to the conservation of mass number 19=18+1 So, the mass number of changed atom =18

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