From 6e6dfc63d3dab49faf9b77dd314f24d7a640e7fc Mon Sep 17 00:00:00 2001 From: phidias Date: Wed, 11 Feb 2026 15:31:01 +0000 Subject: [PATCH] docs: update education/chemistry/1 --- education/chemistry/1.html | 100 +++++++++++++++++++++++++------------ 1 file changed, 69 insertions(+), 31 deletions(-) diff --git a/education/chemistry/1.html b/education/chemistry/1.html index bc6e9e6..59fb17b 100644 --- a/education/chemistry/1.html +++ b/education/chemistry/1.html @@ -2,7 +2,7 @@ title: 1 description: published: true -date: 2026-02-11T15:28:10.742Z +date: 2026-02-11T15:31:01.086Z tags: editor: ckeditor dateCreated: 2026-02-11T14:58:54.870Z @@ -205,40 +205,58 @@ dateCreated: 2026-02-11T14:58:54.870Z

 

Aufbau principle

The lowest energy subshell or orbital will be filled first

-

1s < 2s < 2p < 3s < 3p < 4s < 3d

 

+

1s < 2s < 2p < 3s < 3p < 4s < 3d
 

+

Imagine drawing a line from right to left.

+

You should be able to find out that 4s subshell has a lower energy than 3d subshell this way.
 

+ + + + + + + + + + + + + - + + - + - + - + + + + - - + @@ -246,55 +264,59 @@ dateCreated: 2026-02-11T14:58:54.870Z - + + + - + - + + - - - - + + + - + - - - + + + + + + + - - - - - - + + + + - + @@ -304,21 +326,23 @@ dateCreated: 2026-02-11T14:58:54.870Z + + + + + - - - - + - + @@ -328,6 +352,20 @@ dateCreated: 2026-02-11T14:58:54.870Z + + + + + + + + + + + + + +
n   1      
      ⁄              
11   1s   2   3       
 ⁄   ⁄     ⁄        
22   2s   2p  4   5     
 ⁄   ⁄       ⁄  ⁄       
33   3s   3p    3d    6 7
 ⁄   ⁄   ⁄         ⁄  ⁄  
44   4s    4f  8
 ⁄   ⁄   ⁄   ⁄       ⁄   
55   5s    5f   
 ⁄  ⁄  ⁄  ⁄