﻿344 
  

  

  Dr. 
  H. 
  S. 
  Allen 
  on 
  Molecular 
  

  

  Table 
  I. 
  

   Lithium 
  Compounds. 
  

  

  Name. 
  

  

  Lithium 
  

  

  amide 
  

  

  bromide 
  

  

  carbonate 
  

  

  chloride 
  

  

  fluoride 
  

  

  iodide 
  

  

  nitrate 
  

  

  perchlorate 
  

  

  phosphate 
  

  

  silicate* 
  

  

  sulphate 
  (acid) 
  

   sulphate 
  (normal) 
  . 
  

  

  Formula. 
  

  

  LiNH 
  2 
  

  

  LiBr 
  

  

  Li 
  2 
  C0 
  3 
  

  

  LiCl 
  

  

  LiF 
  

  

  Lil 
  

  

  LiN0 
  3 
  

  

  LiCIO, 
  

  

  Li 
  3 
  P0 
  4 
  . 
  

  

  Li 
  2 
  Si0 
  3 
  

  

  LiHS0 
  4 
  

  

  N. 
  

  

  1>X10-12. 
  

  

  12 
  

  

  6073 
  

  

  38 
  

  

  3-234 
  

  

  36 
  

  

  3-435 
  

  

  20 
  

  

  5079 
  

  

  12 
  

  

  9-207 
  

  

  56 
  

  

  2-227 
  

  

  34 
  

  

  2-821 
  

  

  52 
  

  

  1-742 
  

  

  66 
  

  

  2-345 
  

  

  ! 
  44 
  

  

  3-756 
  

  

  52 
  

  

  1-636 
  

  

  54 
  

  

  2-680 
  

  

  N»/X 
  10-12. 
  

  

  3^x20-8 
  

   6 
  X20-5 
  

   6 
  X20-6 
  

  

  5 
  X20-3 
  

   5^x201 
  

  

  6 
  X20-8 
  

   4^x21-3 
  

   4^X201 
  

   7ix206 
  

   8 
  X20-8 
  

   4 
  X21-3 
  

  

  7 
  X20-7 
  

  

  Mean 
  value 
  of 
  v 
  K 
  — 
  20*66 
  X 
  10 
  12 
  . 
  

  

  In 
  Table 
  II. 
  are 
  recorded 
  the 
  figures 
  for 
  the 
  chlorides 
  of 
  

   the 
  alkali 
  metals, 
  and 
  the 
  monochlorides 
  of 
  copper 
  and 
  silver. 
  

   No 
  data 
  have 
  been 
  obtained 
  for 
  aurous 
  chloride. 
  The 
  pro- 
  

   bability 
  calculated 
  in 
  the 
  same 
  way 
  as 
  for 
  Table 
  I. 
  is 
  

   about 
  1/18. 
  It 
  will 
  be 
  noticed, 
  however, 
  that 
  all 
  the 
  

   frequency 
  numbers 
  in 
  Table 
  II. 
  are 
  integers. 
  The 
  pro- 
  

   bability 
  that 
  this 
  should 
  be 
  the 
  case 
  is 
  about 
  1/2000. 
  

  

  Table 
  II. 
  

   Monochlorides 
  of 
  the 
  Metals 
  of 
  Group 
  I. 
  

  

  Formula. 
  

  

  N. 
  

  

  vxl0~ 
  12 
  . 
  

  

  NvXlO" 
  12 
  . 
  

  

  LiOl 
  

  

  20 
  

  

  28 
  

   36 
  

  

  54 
  

  

  72- 
  

   46 
  

   64 
  

  

  5079 
  

   4-401 
  

   3-493 
  

   2-310 
  

   2065 
  

   2-726 
  

   2-343 
  

  

  5x20-3 
  

   6x20-5 
  

   6x20-9 
  

   6x20-8 
  

   7x21-2 
  

   6x20-9 
  

   7x21-4 
  

  

  NaCl 
  

  

  KC1 
  

  

  RbCl 
  

  

  CsOl 
  

  

  CuCl 
  

  

  AgCl 
  

  

  

  Mean 
  value 
  of 
  v 
  x 
  = 
  20'86 
  XlO 
  12 
  - 
  

  

  In 
  view 
  of 
  the 
  fact 
  that 
  so 
  many 
  other 
  inorganic 
  com- 
  

   pounds 
  as 
  well 
  show 
  fair 
  agreement 
  with 
  the 
  proposed 
  

   relation, 
  it 
  is 
  hardly 
  possible 
  to 
  doubt 
  that 
  it 
  must 
  give 
  at 
  

   least 
  a 
  close 
  approximation 
  to 
  the 
  truth. 
  

  

  * 
  The 
  melting-point 
  of 
  lithium 
  silicate 
  is 
  given 
  as 
  a 
  standard 
  tempe- 
  

   rature 
  (1201°) 
  in 
  the 
  Smithsonian 
  Physical 
  Tables. 
  

  

  