Problem: How many unpaired electrons would you expect on Vanadium in V2O3 

FREE Expert Solution

Step 1: Recall that for a neutral element, Atomic number = # of protons = # of electrons

The atomic number of V is 23 which means V has 23 electrons.


The location of V in the periodic table is shown below:



Based on the figure, V belongs in the d-block in Period 4 so its electron configuration will contain the 4s and 3d subshells

Recall that: 

s–subshell can hold a maximum of 2 electrons

p–subshell can hold a maximum of 6 electrons

d–subshell can hold a maximum of 10 electrons

f–subshell can hold a maximum of 14 electrons


Starting from 1s, the electron configuration for V is:


V: 1s22s22p63s23p64s23d3



Step 2: In V2O3, the charge of V is +3.

The +3 charge means 3 e were lost. Therefore, we need to subtract 3 e starting from the highest energy level (4s).


The electron configuration for V3+ is:


V3+: 1s22s22p63s23p63d2


93% (282 ratings)
View Complete Written Solution
Problem Details

How many unpaired electrons would you expect on Vanadium in V2O3 

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Orbital Diagrams concept. If you need more Orbital Diagrams practice, you can also practice Orbital Diagrams practice problems.