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OJEE EAN Rule — practice questions

2 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.

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The **Effective Atomic Number (EAN)** of Co in $[Co(NH_3)_6]^{3+}$ (Z(Co) = 27) is:Which complex obeys the **EAN rule** (EAN = noble gas count)?