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Questions and Answers
Chlorophyll is a coordination compound of magnesium.
Chlorophyll is a coordination compound of magnesium.
True (A)
Haemoglobin is a coordination compound of iron.
Haemoglobin is a coordination compound of iron.
True (A)
Vitamin B12 is a coordination compound of copper.
Vitamin B12 is a coordination compound of copper.
False (B)
Coordination compounds are not utilized in metallurgical processes.
Coordination compounds are not utilized in metallurgical processes.
Industrial catalysts do not involve the use of coordination compounds.
Industrial catalysts do not involve the use of coordination compounds.
Alfred Werner was an Italian chemist who formulated his ideas about the structures of coordination compounds.
Alfred Werner was an Italian chemist who formulated his ideas about the structures of coordination compounds.
The primary valences in coordination compounds are non-ionizable and are satisfied by neutral molecules or negative ions.
The primary valences in coordination compounds are non-ionizable and are satisfied by neutral molecules or negative ions.
In coordination compounds, the secondary valence is equal to the coordination number and is fixed for a metal.
In coordination compounds, the secondary valence is equal to the coordination number and is fixed for a metal.
According to Werner's theory, metals in coordination compounds show three types of linkages: primary, secondary, and tertiary.
According to Werner's theory, metals in coordination compounds show three types of linkages: primary, secondary, and tertiary.
Isomers in coordination compounds have identical properties despite having different empirical formulas.
Isomers in coordination compounds have identical properties despite having different empirical formulas.
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Study Notes
Introduction to Coordination Compounds
- Transition metals form complex compounds with anions or neutral molecules by sharing electrons, known as coordination compounds.
- Coordination compounds are vital components of biological systems, such as chlorophyll, haemoglobin, and vitamin B12.
Importance of Coordination Compounds
- Coordination compounds have various applications in:
- Metallurgical processes
- Industrial catalysts
- Analytical reagents
- Electroplating
- Textile dyeing
- Medicinal chemistry
Objectives of Studying Coordination Compounds
- Understand the postulates of Werner's theory of coordination compounds
- Learn the definitions of key terms, such as coordination entity, central atom/ion, ligand, coordination number, coordination sphere, and oxidation number
- Understand the rules of nomenclature of coordination compounds
- Learn to write formulas and names of mononuclear coordination compounds
- Define different types of isomerism in coordination compounds
- Understand the nature of bonding in coordination compounds in terms of Valence Bond and Crystal Field theories
- Appreciate the importance and applications of coordination compounds in daily life
Alfred Werner and His Theory
- Alfred Werner, a Swiss chemist, formulated his ideas about the structures of coordination compounds
- Werner proposed the concept of primary and secondary valences for a metal ion
- He prepared and characterized many coordination compounds and studied their physical and chemical behavior
Werner's Theory of Coordination Compounds
- Werner's theory explains the structures of coordination compounds
- The main postulates of the theory are:
- Metals show two types of linkages (valences): primary and secondary
- Primary valences are normally ionizable and are satisfied by negative ions
- Secondary valences are non-ionizable and are satisfied by neutral molecules or negative ions
- The secondary valence is equal to the coordination number and is fixed for a metal
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