My guess is, firstly SC (1 atom per unit cell) is rare in nature as BCC (2 atoms per unit cell) and FCC (4 atoms per unit cell) are more efficient forms of cubic packing and so are more common. I'm not sure about SH.
Secondly, it doesn't happen in nature because nothing is a perfect crystal of...
Been viewing this site for a while now and very much appreciate all the contributors! I can't seem to find an answer to this anywhere so I think I may be misunderstanding the basic ideas of absorption and emission spectra...
An absorption spectrum, say of our Sun, is as I understand it the...