Phosphorus
(
, 1) offers us a very curious arrangement of atoms, which will give some new forms in breaking up. Two segments are in each funnel, in fact the only two of group III
a
which do not show this arrangement, or a modification thereof, are aluminium and arsenic.
PHOSPHORUS: Left segment 50 atoms
Right segment 43 "
--
93
6 funnels of 93 atoms 558
Atomic weight 30.77
Number weight 558/18 31.00
Arsenic
(