Yterbic or Ytterbic: How To spell?
The word Yterbic is misspelled against Ytterbic, an adjective meaning "Pertaining to, or derived from, ytterbium; containing ytterbium."
Ytterbic has double "tt" is mispronounced as "t"Remember double 'TT' in between the strings y & erbic which should not be misspelled with single 'T'
Wrong Spelling:  y-t-erbic  Correct Spelling:  y-tt-erbic 
Find more wrongly spelled words of Ytterbic to spell it well.