

Prof. T. Carnelley on the Periodic Law . 265 



Relation 6. The differences referred to in (4), for both 

 boiling-points and specific gravities, diminish algebraically as 

 the atomic iveight of the positive element increases. (See 

 Table VI.) 



Table VI. — Illustrating Relation 6. 





Diff. in 

 at. wts. 

 of alkjl 

 •adicals. 



CI 



Br 



I 



} 



28 



42 



C 2 H 5 -CH 3 . 



C 3 H 7 -C,H 5 . 



C 4 H 9 — C 3 H 7 



C 3 H 7 — CH 3 . 



C 4 H 9 — C 2 H 5 



C 4 H 9 -CH 3 . 



B.P. 



Sp. gr. 



B.P. 



Sp. gr. 



B.P. 



Sp. gr. 



B.P. 



Sp. gr, 



B.P. 



Sp,gr. 



B.P. 



Sp. gr. 



36 

 35 



" 28 



-•196 

 -•320 ( 



34 

 32 

 30 



-•029 



-•080 

 -•197 



32 

 29 



28 



-•009 

 -•089 

 -•167 



70 



67 



58 



-'•276 

 —517 



66 

 61 



58 



-•038 

 -•169 

 -•364 



102 

 96 



86 



-•365 

 -•684 



Si 



Sn 



Pb 



122 



103 



40 



-'•127 

 -•449 | 



61 

 44 



-•004 



-'008 







183 

 147 



-•135 











Zn 



Hg 



72 

 65 



-•204 

 -•625 



41 

 32 



-•084 

 -•320 



29 

 15 



-'•289 



113 

 97 



-•288 

 -•945 



70 

 47 



-'•609 



142 

 112 



—1-234 



s 



Se 



Te 



C2H5 — CH 3 . 



^\^ 



P 



As ... 



Sb ... 



C 2 H 5 -CH 3 . 



B.P. 



Sp. gr. 



B.P. 



Sp. gr. 



54 

 50 

 18 



-•008 



87 

 a. 59 



78 



-•199 





R] 



and 

 or pi 

 dimv 

 to th 



(b 

 creas 

 posit 



ELATIC 



also be 

 n opidei 

 nish at 

 e prop 

 ) The 

 e as t) 

 ive ele 



N 7. (a) The differences between the boilin 

 tween the specific gravities, of the methides, 

 i } or butides, Sfc. of the elements of the sat 

 ' we pass from the methides to the ethides a? 

 ides, <$fc. 



above differences, as regards the boiling -pi 

 \e difference between the atomic weights oj 

 merits increases. (See Table VII.) 



g-poir 

 r ethid 

 ne gro 

 id the\ 



nnts, 

 • the t 



is, 

 ! es, 

 up 

 ice 



in- 

 wo 





