Don't you think that depends one heckuva lot on exactly what crystal you are talking about and what the atoms are?
Unless you are asking about the difference in meaning and I would think that would be obvious!
#3
asdf1
734
0
i guess so, but i saw that in a textbook about crystallography, and I'm not really clear on what's the difference... it'd be nice if that book could show those two things in a picture or diagram...
The bulk of a crystal is a repeating pattern,
so a "unit cell" can be centered on any atom.
There are many different types of "unit cells",
some retained for the sake of tradition.
Whenever the book describes structure vectors,
assemble a set of sticks in 3-d to show them.
Especially at first, 2-d drawings might not cut it.