MCQ
Co$-$ordination compounds are mostly formed by:
- A$s-$block elements
- B$p-$block elements
- ✓$d-$block elements
- D$f-$block elements
✓
Answer
Correct option: C.
$d-$block elements
Since $'d\ '$ block elements have higher oxidation states and variable oxidation states and their tendency to form co$-$ordinate bonds due to presence of unpaired electrons, they form co$-$ordination complexes.
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