Multiple Choice
Which of the following represents the correct ground-state electron configuration for the Te^{2-} ion?
3
views
10. Periodic Properties of the Elements
The Electron Configuration
Struggling with General Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following is the correct electron configuration for the Ag+ ion?
A
[Kr] 4d^{10} 5s^1
B
[Kr] 4d^{10}
C
[Kr] 4d^9 5s^0
D
[Kr] 4d^9 5s^1
Verified step by step guidance1
Recall that the electron configuration of a neutral silver (Ag) atom is [Kr] 4d^{10} 5s^1. This means silver has one electron in the 5s orbital and a filled 4d subshell.
Understand that when silver forms a Ag^{+} ion, it loses one electron. Electrons are generally removed first from the outermost shell, which is the 5s orbital in this case.
Remove one electron from the 5s orbital of the neutral Ag configuration, leaving the 4d subshell intact with 10 electrons and the 5s orbital empty.
Write the electron configuration for Ag^{+} as [Kr] 4d^{10}, since the 5s electron is lost and the 4d subshell remains fully occupied.
Verify that the other options either incorrectly remove electrons from the 4d subshell or leave the 5s electron present, which does not match the expected electron loss pattern for transition metals.
Related Videos
Related Practice
The Electron Configuration practice set
Problem sets built by lead tutorsExpert video explanations