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Questions and Answers
Which orbitals are electrons removed from first in transition elements?
Which orbitals are electrons removed from first in transition elements?
- 3s
- 4p
- 4s (correct)
- 3d
In coordination compounds, what is a complex ion composed of?
In coordination compounds, what is a complex ion composed of?
- A central transition metal and counter ions
- A central transition metal and ligands (correct)
- A central transition metal and anions
- A central transition metal and cations
What are counter ions in coordination compounds?
What are counter ions in coordination compounds?
- Metal cations that serve as the central atom
- Anions/cations needed to balance the charge of the compound
- Neutral molecules or anions that can be used to form bonds to the central metal ion
- Ions outside brackets that are free and uncomplexed (correct)
What is a ligand in coordination compounds?
What is a ligand in coordination compounds?
What is the requirement for a molecule to be a ligand in coordination compounds?
What is the requirement for a molecule to be a ligand in coordination compounds?
Flashcards
Which orbitals lose electrons first in transition elements?
Which orbitals lose electrons first in transition elements?
4s orbitals are the first to lose electrons.
What is a complex ion?
What is a complex ion?
A central transition metal surrounded by ligands.
What are counter ions?
What are counter ions?
Ions that balance the charge of the complex, residing outside the coordination sphere.
What is a ligand?
What is a ligand?
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Ligand Requirement
Ligand Requirement
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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.
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