10 Questions
What was the primary contribution of Alfred Werner to coordination compounds?
Formulating the concept of primary and secondary valence for metal ions
How many chloride ions are bonded to a cobalt ion in CoCl3.5NH3 according to Werner's theory?
3
What is the color of CoCl3.6NH3 coordination compound?
Yellow
When excess silver nitrate is added to a solution of cobalt(III) chloride with ammonia, what happens to some of the chloride ions?
They precipitate as AgCl
Which observation supports Werner's theory that certain groups remain bonded to the cobalt ion during a reaction?
Precipitation of AgCl in varying mole ratios
According to Werner's theory of coordination compounds, what do the secondary valences represent?
The number of groups bound directly to the metal ion
In Werner's theory, what types of linkages do metals in coordination compounds exhibit?
Primary and secondary linkages
What characteristic spatial arrangements correspond to different coordination numbers in coordination compounds?
Coordination polyhedra
Which geometrical shapes are more common in coordination compounds of transition metals according to Werner's theory?
Octahedral, tetrahedral, and square planar
What distinguishes double salts from complex ions in their behavior when dissolved in water?
Complex ions do not dissociate into simple ions
Explore the foundational work of Alfred Werner, a Swiss chemist who formulated ideas about coordination compounds. Learn about his concepts of primary and secondary valence for metal ions through the study of binary compounds like CrCl3, CoCl2, and PdCl2.
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