Textbook Question
Specify the electron configuration for each of the following atoms and ions.
(a) Cr
(b) Cr3+
24. Transition Metals and Coordination Compounds
Electron Configurations of Transition Metals: Exceptions
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Given the following electron configuration, determine the identity of ion with +2 charge.
A
Pd2+
B
Ru2+
C
Pb2+
D
Cd2+
Verified step by step guidance1
Examine the electron configuration provided in the image. The configuration shows the distribution of electrons in various atomic orbitals.
Identify the number of electrons in the configuration. Count the total number of electrons represented by the arrows in the orbitals.
Determine the neutral atom's electron configuration by adding two electrons to the given configuration, as the ion has a +2 charge, indicating it has lost two electrons.
Match the neutral atom's electron configuration to the periodic table to identify the element. This will help determine the element before it lost two electrons to become the +2 ion.
Compare the identified element with the given options (Pd2+, Ru2+, Pb2+, Cd2+) to find the correct ion that matches the electron configuration.
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