How many EDTA molecules are required to make an octahedral complex with a Ca2+

Question -

How many EDTA molecules are required to make an octahedral complex with a $C a^{2 +}$ ion?

Options:

A . 3

B . 1

C . 2

D . 6

Answer: Option B
:
B
EDTA is a hexadentate ligand and therefore only one EDTA molecule is required to form octahedral complex.

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