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#55180 Bangla Language & Literature পরমানুর গঠন Level 0

প্রতিটি ইলেকট্রনিক কক্ষে ইলেকট্রনের সংখ্যা

  1. A 2n2
  2. B 3n2
  3. C 4n2
  4. D n2
Answer: A - 2n2

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