Textbook Question
Look at the location in the periodic table of elements A, B, C, and D. What is the electron configuration of the transition metal in each of the following ions?
(c) C3+
(d) DO42-
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24. Transition Metals and Coordination Compounds
Electron Configurations of Transition Metals
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What is the ground-state electron configuration for the vanadium 2+ ion?
A
[Ar]3s23d1
B
[Ar]4s23d5
C
[Ar]4s13d2
D
[Ar]4s03d3
E
[Kr]5s04d3
Verified step by step guidance1
Identify the atomic number of vanadium, which is 23. This means a neutral vanadium atom has 23 electrons.
Write the electron configuration for a neutral vanadium atom. The configuration is: [Ar]4s23d3.
Understand that the 2+ charge on the vanadium ion indicates it has lost 2 electrons.
Remove electrons starting from the highest energy level. In this case, electrons are removed from the 4s orbital before the 3d orbital.
After removing 2 electrons from the 4s orbital, the electron configuration for the vanadium 2+ ion becomes: [Ar]3d3.
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