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5. Co-ordination chemistry — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistry5. Co-ordination chemistry1 Mark
MCQ
$EAN$ of $Mg$ is ... in $[Mg(EDTA)]^{2-}$
  • A
    $16$
  • B
    $20$
  • ✓
    $22$
  • D
    $18$
✓

Answer

Correct option: C.
$22$
c
$E.A.N. =$ Atomic no. of central metal ion $-$ oxidation no. of central metal ion $+$ $2^{\times}$coordination no. of central metal ion.

Atomic no. of $Fe =26$

Oxidation no. of Fe in the given compound is $=3$

Coordination no. $=6$

E.A.N. $=26-3+2 \times 6=35$.

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