Transition and Inner Transition Elements — Chemistry STD 12 — Question
Tamilnadu BoardEnglish MediumSTD 12ChemistryTransition and Inner Transition Elements2 Marks
Question
d-block elements readily form complexes. Give reason.
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Answer
1. Transition elements ( $d$-block elements) have a tendency to form coordination compounds (complexes) with a species that has an ability to donate an electron pair to form a coordinate 2. Transition metal ions are small and highly charged and they have vacant low energy orbitals to accept an electron pair donated by other groups. Due to these properties, transition metals form large number of complexes. 3. Examples - $\left[ Fe ( CN )_6\right]^{4-},\left[ CO \left( NH _3\right)_6\right]^{3+}$
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