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#54623 Bangla Language & Literature পর্যায় সারণি Level 0

বিজ্ঞানী ডর্ন ১৯০০ রেডিয়ামের তেজস্ক্রিয় বিভাজন হতে আবিষ্কার করেন

  1. A আর্গন
  2. B জেনন
  3. C নিয়ন
  4. D রেডন
Answer: D - রেডন

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