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