94
Number weight 701/18 38.85
(The weight, as determined by Richards [_Nature_, July 18, 1907] is
39.114.)
RUBIDIUM: (Plate XIX, 3) adds an ovoid, containing three spheres--two
triplets and a sextet--to the lithium spike, of which it has sixteen, and
its central globe is composed of three "balloons."
RUBIDIUM: 16 spikes of 75 atoms 1200
Central globe 330
----
Total 1530
----
Atomic weight 84.85
Number weight 1530/18 85.00
The corresponding negative group consists only of fluorine and manganese,
so far as our investigations have gone.
FLUORINE (Plate IV, 3, and Plate XVII, 1) is a most peculiar looking object
like a projectile, and gives one the impression of being ready to shoot off
on the smallest provocation. The eight spikes, reversed funnels, coming to
a point, are probably responsible for this warlike appearance. The
remainder of the body is occupied by two "balloons."
FLUORINE: 8 spikes of 15 atoms 120
2 balloons 220
----
Total 340
----
Atomic weight 18.
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