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Question: Answered & Verified by Expert
What is the EAN of $\left[\mathrm{Al}\left(\mathrm{C}_{4} \mathrm{O}_{4}\right)_{3}\right]^{3-}$ ?
ChemistryCoordination CompoundsVITEEEVITEEE 2013
Options:
  • A 28
  • B 22
  • C 16
  • D 10
Solution:
1143 Upvotes Verified Answer
The correct answer is: 22
Effective atomic number EAN $=$ Atomic number $-$ oxidation number $+2 \times$ coordination number For $\left[\mathrm{Al}\left(\mathrm{C}_{2} \mathrm{O}_{4}\right)_{3}\right]^{3-}$ $\mathrm{Z}=13$
$\mathrm{ON}=3$ $\mathrm{CN}=6$ $\therefore \mathrm{EAN}=13-3+2 \times 6=22$

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