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NEET 2005
Exam
NEET
Year
2005
Subject
Physics
Chapter
Nuclear Physics

NEET 2005 · Physics · Nuclear Physics

The nuclei of which one of the following pairs of nuclei are...

The nuclei of which one of the following pairs of nuclei are isotones?

Options

  1. A34Se74,31Ga71{ }_{34} \mathrm{Se}^{74},{ }_{31} \mathrm{Ga}^{71}
  2. B38Sr84,38Ga86{ }_{38} \mathrm{Sr}^{84},{ }_{38} \mathrm{Ga}^{86}
  3. C42Se92,40Ga92{ }_{42} \mathrm{Se}^{92},{ }_{40} \mathrm{Ga}^{92}
  4. D20Se40,16Ga12{ }_{20} \mathrm{Se}^{40},{ }_{16} \mathrm{Ga}^{12}

Correct answer

A. 34Se74,31Ga71{ }_{34} \mathrm{Se}^{74},{ }_{31} \mathrm{Ga}^{71}

Step-by-step solution

Isotones means number of neutron remains same.
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