TIN: 8 funnels of 156 atoms 1248
6 spikes of 126 " 756
Central globe 120
----
Total 2124
----
Atomic weight 118.10
Number weight 2124/18 118.00
V.--THE BARS GROUPS.
[Illustration: PLATE XVII.]
Here, for the first time, we find ourselves a little at issue with the
accepted system of chemistry. Fluorine stands at the head of a
group--called the inter-periodic--whereof the remaining members are (see
Crookes' table, p. 28), manganese, iron, cobalt, nickel; ruthenium,
rhodium, palladium; osmium, iridium, platinum. If we take all these as
group V, we find that fluorine and manganese are violently forced into
company with which they have hardly any points of relationship, and that
they intrude into an otherwise very harmonious group of closely similar
composition. Moreover, manganese reproduces the characteristic lithium
"spike" and not the bars of those into whose company it is thrust, and it
is thus allied with lithium, with which indeed it is almost identical.
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