90
Number weight 340/18 18.88
MANGANESE (Plate XVII, 2) has fourteen spikes radiating from a central
"balloon."
MANGANESE: 14 spikes of 63 atoms 882
Central balloon 110
----
Total 992
----
Atomic weight 54.57
Number weight 992/18 55.11
* * * * *
IX.
We have now to consider the breaking up of the octahedral groups, and more
and more, as we proceed, do we find that the most complicated arrangements
are reducible to simple elements which are already familiar.
CARBON (Plate III, 5, and XV, 1).
[Illustration]
Carbon is the typical octahedron, and a clear understanding of this will
enable us to follow easily the constitution and disintegration of the
various members of these groups. Its appearance as a chemical atom is shown
on Plate III, and see XV, 1. On the proto level the chemical atom breaks up
into four segments, each consisting of a pair of funnels connected by a
single atom; this is the proto element which appears at the end of each arm
of the cross in titanium and zirconium.
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