Parallel orientation lower in energy than antiparallel orientation

[asdf1]

Why is the parallel orientation slightly lower in energy than the anitiparallel orientiation?

 

[berkeman]

What is the context of your question?

 

[Gokul43201]

Why is the parallel orientation slightly lower in energy than the anitiparallel orientiation?

Because $-cos(0) < -cos(2\pi)$

 

[arunbg]

Slight typo there Gokul, because $-cos(0) < -cos(\pi)$

 

[asdf1]

thank you very much!

 

[Gokul43201]

Slight typo there Gokul, because $-cos(0) < -cos(\pi)$

Gah, yes of course.

However, the point I was trying to convey was that the question needed to be more specific for the answer to be meaningful.

 

[asdf1]

ok~ sorry about that~

 

[HallsofIvy]

Don't just say you are sorry- be more specific! What is the context of the question? What is it that is "parallel" or "anti-parallel" and what energy are you talking about?