Periodicity and cyclicity of d-elements

      on "electron affinity" property.

Let's write out d-elements of 4-th, 6-th and 8-th numbers and arrange them on a circle. And then let's displace Sc's circle to the left for one element. See fig. 1

Let's construct schedules of the data of electron affinity for elements, starting a row with Sc and elements above it (Pd, Pt).

See fig. 2

                                                                                If the figure does not open - see the saved copy

So usual similarity of elements on property of affinity in the rows of periodic system looks. In the central part of fig.3 diagonal periodicity is visible. The schedule of Sc-Ni row is located here inside other schedules. The rows making these other schedules in a periodic table follow the Sc-Ni row. Minima of schedules at the figure do not break the general principle which consists that minimum of the row with the least electron affinity is  below. Minima are shown in the rows with arrows. 

                                                                          If the figure does not open - see the saved copy

Proceeding from this figure, we shall arrange all elements making

 groups having four elements every one: 

The long form:

Sc	Ti	V	Cr
				Mn	Fe	Co	Ni
	Y	Zr	Nb
				Mo	Tc	Ru	Rh
Pd
	Lu	Hf	Ta
				W	Re	Os	Ir
Pt

The short form:

Sc	Ti	V	Cr
Mn	Fe	Co	Ni
Pd	Y	Zr	Nb
Mo	Tc	Ru	Rh
Pt	Lu	Hf	Ta
W	Re	Os	Ir

Let's construct schedules of electron affinity for all rows of the short form: 

See fig. 4

                                                                                      If the figure does not open - see the saved copy

Schedules of the same rows of periodic system are shown by one color as well as on fig. 2 and fig.3.

On fig. 4 similarity in the general tendency of each rows (increasing,decreasing). At the figure some symmetry of schedules is also visible.

In this work the table of secondary periodicity (the full form) was used (will be published later),

See the short form at www.genevo.org/OD.gif

Main page see at www.genevo.org.

The beginning of the text see at http://www.genevo.org/E.htm, http://www.genevo.org/H.htm .   http://www.genevo.org/Z1.htm  - continuation

Author   Oleg Aleksandrov,  07.14.2004.