Hund's rule

Japanese: フントの規則 - フントのきそく(英語表記)Hund's rule
Hund's rule
A rule regarding the energy levels of atoms that E. Hund empirically derived from atomic spectrum data. Within an atom, if there are x electrons in orbits with fixed quantum numbers n and l , and 1 < x < 2l , then there are several states with different spin quantum numbers S and azimuthal quantum numbers L. Of these, the one with the largest S is the most stable, and among those with the largest S , there is a tendency for the one with the largest L to be the most stable. Also, within the fine structure, when the electrons in the outer shell are packed half or less, the smaller the total angular momentum J , the more stable it is, and when they are packed half or more, the larger the J , the more stable it is.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:
原子のエネルギー準位に関して,E.フントが原子スペクトルのデータから経験的に導き出した規則。原子のなかで,量子数 nl が決まった軌道の中に x 個の電子があり,1<x<2l であれば,スピン量子数 S と方位量子数 L が異なるいくつかの状態が存在する。このうち,S が最大のものが最も安定であり,S が最大のもののなかでは,L が最大のものが最も安定という傾向がみられる。また微細構造のなかでは,外殻での電子の詰まり方が半分以下のときは,全角運動量 J が小さいものほど安定であり,詰まり方が半分以上のときは,J が大きいものほど安定となる。

出典 ブリタニカ国際大百科事典 小項目事典ブリタニカ国際大百科事典 小項目事典について 情報

<<:  Plunder - Plunder

>>:  Bundschuh (English spelling) German

Recommend

Ficus microcarpa (English spelling) Ficus microcarpa

…Figs [Okamoto Motoji]. … *Some of the terminolog...

New Story of the Lantern

A collection of supernatural stories from the Ming...

Mouseeater (Mouse Eater) - Mulgara

At first glance it resembles a mouse, but it is a ...

Grand Banks of Newfoundland

A shallow area of ​​the ocean floor southeast of N...

Terrestrial heat flow

The flow of heat from the Earth's interior to ...

Manship, P. (English spelling) ManshipP

...Around the end of the 19th century, academic n...

Open shop (English)

A system in which employees can be employed regard...

Guignol

Finger puppets. The head and hands of the puppet a...

Intermolecular forces

There are two main types of forces that act betwe...

Vanda coerulea (English spelling)

…[Koichi Ejiri]. … *Some of the terminology that ...

Borrowed scenery

A style of Japanese gardens. It is a technique th...

《Rabbit,Run》(English) RabbitRun

…Born in Shillington, Pennsylvania, he graduated ...

Yasuda Yukihiko

Japanese painter. His real name was Shinzaburo. H...

Yoshiwara is a popular boy - Yoshiwara is a popular boy

A collection of songs from the Edo period. It is a...

Kant-Laplace's Nebular Theory

→Nebula theory Source : Heibonsha Encyclopedia Abo...