, 5, and
, 1) shows two "cigar"-bearing tetrahedra, and two hydrogen triangles, the tetrahedra revolving round an egg-shaped central body, and the triangles spinning on their own axes while performing a similar revolution. The whole has an attractively airy appearance, as of a fairy element.
HELIUM: Two tetrahedra of 24 atoms 48
Two triangles of 9 atoms 18
Central egg 6
----
Total 72
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Atomic weight 3.94
Number weight 72/18 4.00
Neon
(
, 2 and 6) has six arms of the pattern shown in 2, radiating from the central globe.
NEON: Six arms of 40 atoms 240
Central tetrahedra 120
----
Total 360
----
Atomic weight 19.90
Number weight 360/18 20.00