180  Spelling,  etc.,  of  Chemical  Terms.  {^a^iSs"™* 
ca'lcium),  but  long  otherwise  (as  tlta'nium,  sele'nium, 
chro'miu  m). 
aluminum      e'rbium  me'rcury  so'dium 
a'ntimony      flu' or  in  molybdenum  stro'ntium 
a;  r  s  e  n  i  c  ga'  Ilium         ni'ckel  (shium) 
ba'rium  germa'nium  ni'trogen  su'lfur 
b  i'  s  m  u  t  h  (biz)  g  1  u'  c  i  n  u  m      6'smium  tantalum 
bo'ron  gold  6'xygen  tellu'rium 
bro'mln  h  yr  d  r  o  g  e  n     palladium  te'rbium 
ca'dmium       I'ndium  phos'phorustha'llium 
calcium  i'odin  pla'tinum  tho'rium 
ca'rbon  iri'dium         pota'ssium  tin 
ce'rium  iron  rho'dium  tlta'nium 
ce'sium  la'nthanum   rubiMium  t  u'  n  g  s  t  e  n 
chld'rin  lead  ruthe'nium  ura'nium 
chro'mium     li'thium         sama'rium  vana'dium 
co'balt  magne'sium  sca'ndium  ytt  e'rbium 
colu'mbium         (zhium)       sele'nium  y'ttrium 
co'  pper  ma'nganese  silicon  zinc 
d  i  d  f  m  i  u  m  (eze)     silver  z  i  r  c  o'  n  i  u  m 
Also  :  a  m  mo'  nium,  phospho'nium,  ha'logen,  cya'no- 
g e n,  aml'dogen. 
Note  in  the  above  list  the  spelling  of  the  halogens,  cesium 
and  sulfur;  f  is  used  in  the  place  of  ph.  in  all  derivatives  of  sulfur 
(as  sulfuric,  sulfite,  sulfo-,  etc.). 
TERMINATIONS  IN  -ic. 
The  vowel  of  the  penult  in  polysyllables  is  short  (as  cya'ni c, 
f  u  ma' r  i  c,  a  r  s  e' n  i  c,  sili'cic,  I  o' d  i  c,  b  u  t y'  r  ic),  except  (i)  u 
when  not  before  two  consonants  (as  mercuric,  p  r  u' s  s  i  c),  and 
(2)  when  the  penult  ends  in  a  vowel  (as  b  e  n  z  6'  i  c,  o  1  e'  i  c) ;  in 
dissyllables  it  is  long  except  before  two  consonants  (as  b  6'  r  i  c, 
c  V  t  r  i  c). 
Exception :  a  c  e' t  i  c  or  a  c  e' t  i  c. 
The  termination  -ic  is  used  for  metals  only  where  there  is  a  con- 
trast with  -OUS  (thus  avoid  aluminic,  ammonic,  etc.). 
TERMINATIONS  IN  -OUS. 
The  accent  follows  the  general  rule  (as  pla'tinous,  sulfurous, 
pho'sphorous;  coba'ltous). 
Exception :  acetous. 
