Multiple Choice
Which of the following is true about the atomic size of transition metals?
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24. Transition Metals and Coordination Compounds
Electron Configurations of Transition Metals
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Determine electron configuration for the ion of Cd in cadmium sulfide (CdS) compound.
A
[Kr]5s24d10
B
[Kr]4d10
C
[Kr]5s24d8
D
[Kr]5s24d105p2
Verified step by step guidance1
Identify the neutral atom's electron configuration: Cadmium (Cd) has the electron configuration [Kr]5s^2 4d^10.
Determine the charge of the ion: In cadmium sulfide (CdS), cadmium typically forms a +2 ion.
Remove electrons according to the ion's charge: For a +2 charge, remove two electrons from the outermost shell.
Identify the outermost shell: The 5s orbital is the outermost shell in the electron configuration of neutral cadmium.
Remove electrons from the 5s orbital: Subtract two electrons from the 5s orbital, resulting in the electron configuration [Kr]4d^10 for the Cd^2+ ion.
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