296 
giving v= 74,4.10—->; this volume will probably be somewhat 
smaller at the triple point, which lies lower; not smaller, however, 
than about 63.10 >, as is easy to calculate. 
From all this it may be inferred that at present there is not 
much chance of reconciling the few data for Fluor. 
If f,=1,262 is correct, then 
fatty = 1,262 x 3,020 — 3,81 
would follow with u, = 
b. Chlorine. With D=1,717, D’=0 at —100°C. (PELLATON, 
These 1915, p. 31) we calculate from 
(dd) TD + D) — De 
27 = = 
1l—m Di. Ben 
for 2y the value 
Eda „71 6—1,146 
pe a Tt — 1,700'). 
The values of 7% and Dy, aid also a others, have been borrowed 
from PELLATON. 
From the formula 2y = 1 + 0,038 417,1 the somewhat greater 
value 1,776 would have been calculated for 2y. 
Now the triple point lies at — 101°,5 C. = 171,°6 abs. (JOHNSON 
and Mc. INrosn, 1909); hence from (),—D): De == 2y (m—m,) we 
find : 
D= 1717 4 0,578 SEA 700 (0,4180-—0,11 4) 1,721, 
from which follows A: D, = 20,61, v, = 91,96 . 10. 
We find further for the factor f,: 
nat OsSa 
f, = 1,700 k AL ar X vn | — 1,7(1 —0,189) = 1,379. 
From this is calculated 5, = 91,96 .10—-5 x 1,879 —126,8 . 10-59, 
while from 7% and pz (values of PELLATON) 125,5 is directly cal- 
culated (for 1 atom Cl). 
From y= 0,85 would follow r= vz: bg = (y+): 7 = 2,176. As 
Dx = 0,573, we have vj, = 39,46 : 0, 573: 2241221701. 1008 
1 atom. Hence 6; would be = (276,1 :2,176) 10— = 126,9 . 1055; 
quite identical to the value found just now by the aid of y from 
the so distant value of D, at the triple point. 
Agr ee 2 436, we get: 
Fu, = 1,879 < 2,436 = 3,36. 
1) Between 0° C. and 7e with D = 1,4678, D’=0,0128 we should have found 
the slightly lower value 1,692. 
