हिंदी

The composition of the nuclei of three atomic species X, Y, and Z are given as follows. Number of protons Number of neutrons X 18 19 Y 17 18 Z 17 20 Explain the relation between the following:

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प्रश्न

The composition of the nuclei of three atomic species X, Y, and Z are given as follows.

  X Y Z
Number of protons 18 17 17
Number of neutrons 19 18 20

Explain the relation between the following:

Z and X

लघु उत्तरीय
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उत्तर

Atomic species Z and X are isobars because they have different atomic numbers (17 and 18) but the same mass number.

Their mass numbers are:

  • Z = 17 + 20 = 37
  • X = 18 + 19 = 37

Hence, Z and X are isobars of different elements, chlorine and argon, respectively.

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अध्याय 8: Journey Inside the Atom - Revise, Reflect, Refine [पृष्ठ १५८]

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एनसीईआरटी Science Exploration [English] Class 9
अध्याय 8 Journey Inside the Atom
Revise, Reflect, Refine | Q 3. (ii) | पृष्ठ १५८
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