Metalamonium or Metalammonium: How To spell?
The word Metalamonium is misspelled against Metalammonium, a noun meaning "A hypothetical radical derived from ammonium by the substitution of metallic atoms in place of hydrogen."
Metalammonium has double "mm" is mispronounced as "m"Remember double 'MM' in between the strings metala & onium which should not be misspelled with single 'M'
Wrong Spelling:  metala-m-onium  Correct Spelling:  metala-mm-onium 
Check more misspelled words of Metalammonium to spell it correct.