What is the charge on the Cr in the ionic compound Cr2O3?
Question asked by: knowitall
Ah yes, good old chemistry homework questions! Well, to work out what the charge must be on the chromium, lets look at what you have:
Cr2O3
Ok, so you have two chromium and three oxygen atoms. You know this is a salt and therefore the charges must balance out. What possible values will do this? Well, since there are different numbers of each atom then the first thing you know is that the charge on the Cr must be different to that on the Oxygen.
And since there are less Cr, then the charge must be greater on this than on the Oxygen. Therefore the lowest values that will balance are 3 for Cr, and 2 for Oxygen. Therefore this is the answer.
By: Unknown
Average rating for this answer is 4 / 5
Rate Answer
Comment or provide your answer to this question
No comments have been added to this question "What is the charge on the Cr in the ionic compound Cr2O3?".
No comments have been added to this question "What is the charge on the Cr in the ionic compound Cr2O3?".
Ask a New Question
Find out more about Chemistry
Find out more about Chemistry
Chemistry Questions and Answers
ions Questions and Answers
Next question: Is there a spot test to detect chemicals in a tire?
Become a Member! It's Free >>>
Share on Facebook:
On Twitter:
Tweet this!
Question Keywords
ionic  compound  cr2o3  charge  
More Questions:What Is Cobalt Used For?
Why Are Noble Gases So Unreactive?
How Is Glass Made?
What Is Alchemy?
What Are The Most Common Elements In Living Things?