Final answer:
The charge of the d-subshell metal can be determined by looking at the electron configuration of the element.
Step-by-step explanation:
The charge of the d-subshell metal can be determined by looking at the electron configuration of the element. Beginning with the transition metal scandium (atomic number 21), additional electrons are added successively to the 3d subshell.
This subshell is filled to its capacity with 10 electrons. For metals with partially filled d subshells, they usually form colored complex ions, while ions with empty d subshells or filled d subshells usually form colorless complexes.
The charge of a d-subshell metal can be deduced by examining its electronic configuration and considering that transition metals lose electrons from their 4s subshell before the 3d subshell.
Additionally, the charge can correlate with complex ion color, where metals with partially filled d subshells form colored complexes, while those with filled or empty d subshells tend to be colorless.
For metals with partially filled d subshells, they usually form colored complex ions, while ions with empty d subshells or filled d subshells usually form colorless complexes.