Stontium Zincate?

I have to figure out the atom occupancy for strontium zincate based on h k l values. I know the compound is orthorhombic and must know figure out if it's primitive, face centered, body centered, or base centered. How do i do this by hkl values?

Answer:
The different centering give rise to systematic absences, meaning whole lines or planes of reflections will literally be missing, so their hkl values will be zero. Look up the systematic absences for the different types of centering, then see which ones most closely match your values.

Wow, a question for which graduate-level knowledge of chemistry is actually required. Thank you, your question helps to redeem this generally "do my homework for me" depressing site.
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