POTASSIUM: 9 bars of 63 atoms 567
Central globe 134
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Total 701
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Atomic weight 38.94
Number weight 701/18 38.85
(The weight, as determined by Richards [Nature, July 18, 1907] is 39.114.)
Rubidium
: (
, 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
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Total 1530
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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
(