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Question
নিম্নের কোনটি ডি-ব্লকের মৌল?
Hg
As
In
Sn
Rn
ANSWER : 1
Descrption
<p><strong>মার্কারি (Hg) </strong>একটি d-block মৌল এবং এর ইলেকট্রন বিন্যাস : [Xe]4f14 5d10 6s² ; এখানে শেষ ইলেকট্রনটি d অরবিটালে প্রবেশ করে ।</p><p>বাকি চারটি (As, In, Sn, Rn) মৌল p-block এর অন্তুর্ভুক্ত ।</p>
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