Elementouch
Yoshiteru Maeno
Department of Physics
Kyoto University
1. Mendeleev’s periodic law and table
2. Long-form periodic tables● Are there any rooms for further improvements ?

3. Elementouch● Bridging the gap between the long and short tables

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1869
Mendeleev's Tabelle I
Mendeleev wrote in his diary:"I saw in a dream a table
where all the elements fell into
place as required. Awakening,
I immediately wrote it down ona piece of paper."Mendeleev predicted several
undiscovered elements
and their properties based on his“Periodic Law”

Mendeleev’s short-period table
1871 Mendeleev's Tabelle II❶❷❸

3Ann. Suppl. 8, 133 (1871).
Predictions of
unknown elements
and successivefindings enhanced
Mendeleev’s fame.
❶ Sc (1879)❷ Ga (1875)❸ Ge (1886)

Several scientists proposed periodic TABLEs based on atomic weights.
It was Mendeleev who first proposed the periodic table based on periodic LAW,
and made specific predictions.

Mendeleev’s Shot-Period table
and the modern Long-Period form

Q: Who first invented this typeof the periodic table?
Mendeleev’s periodictable

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Q: Who first invented
the modern long-periodperiodic table?

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A: Alfred Werner
ヴェルナー（1905）(Univ. Zürich, Switzerland)

1913: The first Nobel prize in Inorganic Chemistry;
Coordination theory, Werner complexes● I hope that Werner’s name is properly recognized
as the inventor of the modern periodic table.

Q: Who invented a periodic table with therare-earth elements separated at the bottom?

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A: Von Paul Pfeiffer (Karlsruhe) (1920) パイファー

Pfeiffer’s
name is evenlessrecognized.

Werner-Pfeiffer’s Periodic Table (long-period table)

7Alfred Werner(U. Zürich,Switzerland)

Widely used world-wide for more than 100 years.
Invented by Werner in 1905 andimproved by Pfeiffer in 1920.

● Any rooms for further improvements?

Werner-Pfeiffer’s Periodic Table

8❶ Why are there such gaps?

AlfredWerner❷ Why should they be ina separate table?

❸ Why are similar elements separated?

SmCo5,Nd2Fe14B（high-tech magnet）

Ca - Cd,

Ti - SnI invented a new periodic table to solve theseproblems: ‟Elementouch” 2001
The three problems are allresolved！

“Ribbon”of element symbols

Elementouch

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Periodic law
is recovered
Ionic tendencies:Propertiesof elements
in compounds+2 ions+3 ions+4 ions11

A: How can Mendeleev’s periodic law be reproducedwith a 3-tube helical periodic table?
A: Ionic tendencies (“valency”) repeat among three blocks.

f-block elements
希土類

d-block elements
遷移金属

s- AND p-blockelements
典型元素

Comparison among previous helical periodic tables and Elementouch12

仮面ライダービルド

藤木直人2006

優香

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堂本剛(大平貴之役）“石動惣一”（前川泰之）使用のマグ

テレビ朝日 2017年9月~ 毎週日曜朝8時

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TV series 「ごめんね青春！」

錦戸亮

満島ひかり

TBS (MBS) 「ごめんね青春！」
2014年10-12月 Sunday at 9:00 PM

映画「イニシエーションラブ」
2015年

松田翔太

前野朋哉

SPEC というTVドラマ「京大理」出身の主人公の刑事当麻（戸田恵梨香さん）愛用のマグは「エレメンタッチ」
2010年12月 ＴＶドラマ
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2013年11月 映画第2作・スペシャルＴＶドラマ
2020年6月11日～ TVドラマ再放送 関西は??

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Globe and Elementouch

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Conventional periodic table
is like a world map.

Elementouchis like a globe !

A new world map ?

Elementouch17

1. Mendeleev’s periodic system● Periodic law was the core of his invention.

2. Werner (1905) invented
the modern long-period table● Mendeleev-Werner’s periodic table
3. Elementouch● Bridging the gap
between the long and short tables
Japanese counterpartof “Physics Today”

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YouTube:“Science News Network Vol. 42” (SNN42)

Our laboratory HP:
http://www.ss.scphys.kyoto-u.ac.jp/elementouch/index.html

Thank you!

Origin of the discontinuity:different electron orbitals
The orbital wave functions

s orbitalp orbitals

d orbitals

Electron shells
K shell：1s
L shell：2s, 2p
M shell：3s, 3p, 3d
N shell：4s, 4p, 4d, 4f4s is occupied before 3d19(origin of discontinuity).

Electron shells 電子の殻（かく）Why is Werner’s table in this particular form?
Bohr’s model of atoms
energy:En ∝ − 12nPrincipal quantum number (主量子数)n = 1, 2, 3, 4, 5, ...
Electron shells (電子殻)K, L, M, N, O, ...
Number of electrons (電子収容数)
2, 8, 18, 32, 50, …

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3D Periodic Table of the Elements: Elementouchsp orbitals

continuity+3 ions

electronsub-shells

d orbitals

f orbitals+4 ions
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Elementouch on a T-Shirt“a new world map” ?

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