Nonmetalic or Nonmetallic: How To spell?
The word Nonmetalic is misspelled against Nonmetallic, an adjective meaning "Not metallic."
Nonmetallic has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings nonmeta & ic which should not be misspelled with single 'L'
Wrong Spelling:  nonmeta-l-ic  Correct Spelling:  nonmeta-ll-ic 
Find more incorrect spellings of Nonmetallic to spell right way.