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অধিক্রমণ কী?

Md. Saifur Rahman

একটি অরবিটালের ইলেকট্রন মেঘের সাথে অপর অরবিটালের ইলেকট্রন মেঘের মিলনকে অধিক্রমণ বলা হয়।

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