I know that sigma bonds are stronger than pi bonds. What I am confused over is the strengths of the pi and sigma bonds formed between different orbitals. In class, our sir told us that $p\pi - p\pi$ bonds are weaker than $p\pi-d\pi$ bonds. The reasoning he gave behind this was that since the d o...

I use the DownThemAll extension for Firefox and it's amazing. Except for one little detail: I can change it's interface language. I've been using DownThemAll for many years, and last year it suddenly implemented translations. A new language suddenly activated itself on my DownThemAll install, wi...