Multiple choice

Identify the isotonic species in the given sets.

  1. 30Zn68, 31Ga71, 32Ge70

  2. 32Ge70, 30Zn68, 31Ga69

  3. 32Ge72, 31Ga71, 30Zn66

  4. 30Zn66, 31Ga69, 32Ge70

  5. 31Ga69, 30Zn64, 32Ge72
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Isotonic species: The atomic species in which number of neutrons is the same. 32Ge70, 30Zn68 and 31Ga69 all have 38 neutrons. Hence, these are isotonic species.

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