5 Questions
Which orbitals are electrons removed from first in transition elements?
4s
In coordination compounds, what is a complex ion composed of?
A central transition metal and ligands
What are counter ions in coordination compounds?
Ions outside brackets that are free and uncomplexed
What is a ligand in coordination compounds?
A neutral molecule or anion that can be used to form bonds to the central metal ion
What is the requirement for a molecule to be a ligand in coordination compounds?
It must contain at least one lone pair of electrons
Study Notes
Transition Elements
- In transition elements, electrons are removed from the outermost d subshell first, followed by the s subshell.
Coordination Compounds
- A complex ion is composed of a central metal atom or ion bonded to one or more neutral molecules or negative ions, known as ligands.
Counter Ions
- Counter ions are ions that are not directly bonded to the central metal atom or ion in a coordination compound, but rather are present to balance the charge of the complex ion.
Ligands
- A ligand is a neutral molecule or negative ion that is bonded to the central metal atom or ion in a coordination compound.
- The requirement for a molecule to be a ligand is that it must have at least one unshared pair of electrons that can be used to form a coordinate covalent bond with the central metal atom or ion.
Test your knowledge on coordination compounds and complexation with this quiz! Learn about electron configuration exceptions, the energy levels of orbitals, and the definitions of coordination compounds.
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