JEE Main Chemistry question

Coordination number is best defined as

(A)The number of ligands around a metal ion bonded by - and -bonds both
(B)The number of only anionic ligands bonded to the metal ion
(C)The number of -bonds (coordinate bonds) between the ligands and the central metal atom or ionCorrect
(D)The total number of valence electrons donated by all ligands combined

Answer: (C)

Solution

Coordination number counts the number of donor-atom-to-metal (coordinate) bonds — e.g. a hexadentate EDTA

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Question ID VK-155437