Books on physical chemistry by Atkins

[Titan97]

I saw many books on physical chemistry by Peter Atkins.
1)Elements of Physical chemistry by Peter Atkins and Julio De Paula
2)Physical Chemistry by Peter Atkins and Julio De Paula
3)Chemical Pricnciples - A quest for insight by Peter Atkins and Loretta Jones
Which book should I use for learning concepts in depth and for competitions?

 

[Bystander]

in depth

How much "depth?"

 

[Titan97]

I am preparing fr an exam which is of Olympiad level. So the things should be explained properly. Which one is more suitable for intense competitions?

 

[Bystander]

3)Chemical Pricnciples

Should be more than enough to keep you busy between now and November.

 

[Titan97]

Thank you.