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#54012 Bangla Language & Literature General Level 0

যে সকল নিউক্লিয়াসের নিউট্রন সংখ্যা সমান কিন্তু ভর সংখ্যা সমান নয়, তাদের কী বলা হয়?

  1. A আইসোটোন
  2. B আইসোবার
  3. C আইসোমার
  4. D আেইসোটোপ
Answer: A - আইসোটোন

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