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  4. What is the EAN of [Al(C4O4)3]3- ?

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Q. What is the EAN of $[Al(C_4O_4)_3]^{3-}$ ?

VITEEEVITEEE 2013

Solution:

Effective atomic number EAN
= Atomic number - oxidation number $+$
$2 \times$ coordination number
For $\left[ Al \left( C _{2} O _{4}\right)_{3}\right]^{3-}$
$Z=13$
$ON =3$
$C N=6$
$\therefore $ EAN $=13-3+2 \times 6=22$