EDTA has coordination number

Options

A. 3
B. 4
C. 5
D. 6

Answer

D

Explanation

Coordination number of the central atom or ion is determined by the number of sigma bonds formed by the ligand with the central atom or ion .
`therefore ` EDTA (Ethylene diaminetetraacetate ) has `CN =6`
`{:(""^(-)OOCH_(2)C" "CH_(2)COO^(-)),(" \ "" /"),( " "overset(..)N- CH_(2) -overset(..)N),(" /"" \"),(""^(-)OOCH_(2)C" "CH_(2)COO^(-)),(" EDTA"):}`