Q.
EDTA4− forms very stable complexes with most of the transition metals. In an octahedral [M(EDTA)]2− complex where M is in +2 oxidation state, the number of M−O bonds is/are____.
The donor atoms in EDTA4− are 2N-atoms and 4 negatively charged O-atoms. When EDTA4− ion bonds to a metal ion (Mn+), it forms six bonds (i.e., 2M−N bonds and 4M−O bonds).