Alright in the textbook "Principles of Modern Chemistry", Oxtoby &
Nachtrieb, 1990, page 521
talks about anomalous electron configuration which I have reproduced
with this list.
Cr 3d5,4s1
Cu 3d10, 4s1
Nb 4d4, 5s1
Mo 4d5, 5s1
Ru 4d7, 5s1
Rh 4d8, 5s1
Pd 4d10
Ag 4d10, 5s1
La 5d1, 6s2
Ce 4f1, 5d1, 6s2
Gd 4f7, 5d1, 6s2
Pt 5d9, 6s1
Au 5d10, 6s1
Ac 6d1, 7s2
Th 6d2, 7s2
Pa 5f2, 6d1, 7s2
U 5f3, 6d1, 7s2
Np 5f4, 6d1, 7s2
Cm 5f7, 6d1, 7s2
But are they really anomalous electron configurations of the Aufbau of
atoms? I would say not, because the table of elements using the Aufbau
does not use the Maxwell Equations and assumes that room temperature
is sufficient to represent the Aufbau.
If the table of chemical elements were to be listed at near absolute
zero Kelvin temperature then the above list would be far different.
So how does the Maxwell Equations derive the Aufbau? And how does the
Maxwell Equations preempt the above anomalies and makes them as "what
is expected" rather than as anomalous.
In using the Maxwell Equations to derive the Aufbau, we must remember
that the Maxwell Equations derives the proton configuration in the
nucleus of the Elements and that affects what the electron
configuration ends up as being. So that the column of copper, silver
and gold are odd number electrons and odd number protons near the end
of the d subshell, that the proton configuration causes what we think
of as an anomaly but is rather what is expected from the Maxwell
Equations.
So that we have the highest normal conductors in the copper, silver
gold column due to the "Subshell Switch". And we have niobium as one
of the highest elemental superconductors because of the subshell
switch.
So what if we listed the elements subshells at a temperature near 0
Kelvin rather than the table shown in Oxtoby & Nachtrieb which is at
room temperature compiled. If we listed the table of elements
according to the Maxwell Equations and at near 0 Kelvin, then there
would be no anomalies to speak of.
Archimedes Plutonium
http://www.iw.net/~a_plutonium
whole entire Universe is just one big atom
where dots of the electron-dot-cloud are galaxies