\( \left[\mathrm{Cu}\left(\mathrm{NH}_{3}\right)_{4}\right] \mathrm{Cl}_{2} \) যৌগটিকে Cu এর সন্নিবেশ সংখ্যা কত?

A 5

B 4

C 3

D 2

Solution

Correct Answer: Option B

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