JEE Advanced 2013 · Paper 1 · Chemistry Q38

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ChemistryInteger+4 / -1Question 38 of 60

$\ce{EDTA^{4-}}$ is ethylenediaminetetraacetate ion. The total number of N-Co-O bond angles in $\ce{[Co(EDTA)]^{1-}}$ complex ion is

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Answer and worked solution

Official answer: 8

Octahedral [Co(EDTA)]⁻. EDTA binds through 2 N and 4 O. The two N atoms are cis to each other, so each N has the other 4 positions occupied by O: 3 cis (90°) and 1 trans (180°).

N-Co-O angles: 2 × 4 = 8.

Answer: 8

Topics:Isomerism in complexes VSEPR theory

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JEE Advanced 2013 · Paper 1, Chemistry question 38