,,,,,................,,,
Periodic
Table of Elements (PTE)
is a chart showing all the elements arranged in groups with similar chemical
properties.
Element
Pyramide is a three-dimensional presentation of PTE
Left photo: There are 8
vertical columns = main-groups,
("families")
group
I = Alkali metals
3Li, 11Na, 19K,
.............
group
VII = Halogen_nonmetals
9F, 17Cl, 35Br,
.............
group
VIII = Noble gases
2He , 10Ne, 18Ar,
36Kr
.............
The PTE has also 7
horizontal rows = periods
1. period: 1H
(hydrogen) 2He
(helium) /
2. period 3Li ,
4Be, .....
1oNe
Right photo: In the element
pyramid the main group VIII is surrounded by VI (VI,V)
and I (II, III).