Multiple Choice
Which of the following is a possible excited state electron configuration for a nitrogen atom?
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 indium (In)?
A
1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^{10} 4p^6 5s^2 4d^{10} 5p^3
B
1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^{10} 4p^6 5s^2 4d^{10} 5p^2
C
1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^{10} 4p^6 5s^2 5p^3
D
1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^{10} 4p^6 5s^2 4d^{10} 5p^1
Verified step by step guidance1
Step 1: Identify the atomic number of indium (In), which is 49. This means indium has 49 electrons to be placed in orbitals according to the Aufbau principle.
Step 2: Recall the order of orbital filling based on increasing energy levels: 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, and so on.
Step 3: Begin filling the orbitals with electrons following the order and the maximum number of electrons each orbital can hold: s (2 electrons), p (6 electrons), d (10 electrons).
Step 4: After filling up to 4p^6 (which accounts for 36 electrons), continue filling 5s^2 (2 electrons) and then 4d^{10} (10 electrons), reaching a total of 48 electrons.
Step 5: Place the remaining 1 electron in the 5p orbital, resulting in 5p^1, to complete the electron configuration for indium with 49 electrons.
Related Videos
Related Practice
The Electron Configuration practice set
Problem sets built by lead tutorsExpert video explanations