Multiple Choice
In the ground-state electron configuration of Fe^{3+}, how many unpaired electrons are present?
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10. Periodic Properties of the Elements
The Electron Configuration: Ions
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Determine the electron configuration and electron orbital diagram for the silver ion.
A
[Kr] 4d10
B
[Kr] 4d8 5p2
C
[Kr] 4d8
D
[Kr] 4d8 5s2
Verified step by step guidance1
Identify the atomic number of silver (Ag), which is 47, and write its electron configuration in the ground state: [Kr] 4d10 5s1.
Recognize that the problem asks for the electron configuration of the silver ion. Silver commonly forms a +1 ion (Ag+), meaning it loses one electron.
Determine which electron is removed when silver forms a +1 ion. Electrons are typically removed from the outermost shell first, so the 5s electron is removed.
Write the electron configuration for the Ag+ ion after removing the 5s electron: [Kr] 4d10.
Draw the electron orbital diagram for the Ag+ ion, showing the filled 4d orbitals: 4d orbitals have 10 electrons, so all five 4d orbitals are fully filled with paired electrons.
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