Question:
What is EAN of Co in \( [Co(NH_{3})_{6}]^{3+} \)?
What is EAN of Co in \( [Co(NH_{3})_{6}]^{3+} \)?
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EAN calculation: $Z - \text{Oxidation State} + 2 \times \text{Coordination Number}$.
Updated On: Apr 30, 2026
- 36
- 34
- 38
- 32
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The Correct Option is A
Solution and Explanation
Step 1: EAN Formula
$EAN = Z - ON + 2(CN)$.
Step 2: Identify Values
- Atomic number (Z) of Cobalt = 27. - Oxidation Number (ON) of Co in $[Co(NH_3)_6]^{3+}$ = +3. - Coordination Number (CN) = 6 (six monodentate $NH_3$ ligands).
Step 3: Calculation
$EAN = 27 - 3 + 2(6)$ $EAN = 24 + 12 = 36$.
Step 4: Conclusion
EAN is 36, which corresponds to the noble gas Krypton.
Final Answer:(A)
$EAN = Z - ON + 2(CN)$.
Step 2: Identify Values
- Atomic number (Z) of Cobalt = 27. - Oxidation Number (ON) of Co in $[Co(NH_3)_6]^{3+}$ = +3. - Coordination Number (CN) = 6 (six monodentate $NH_3$ ligands).
Step 3: Calculation
$EAN = 27 - 3 + 2(6)$ $EAN = 24 + 12 = 36$.
Step 4: Conclusion
EAN is 36, which corresponds to the noble gas Krypton.
Final Answer:(A)
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