Read about VSEPR theory
http://www.google.com/search?q=vsepr+theory&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a
how to identify bond angles
3 answers
thx
but wat is a good way to remember it
but wat is a good way to remember it
Practice it enough that you have it memorized.