diff --git a/education/chemistry/1.html b/education/chemistry/1.html
index bb17fa4..eb1cfec 100644
--- a/education/chemistry/1.html
+++ b/education/chemistry/1.html
@@ -2,7 +2,7 @@
 title: 1
 description: 
 published: true
-date: 2026-02-11T15:24:52.213Z
+date: 2026-02-11T15:25:43.391Z
 tags: 
 editor: ckeditor
 dateCreated: 2026-02-11T14:58:54.870Z
@@ -169,23 +169,24 @@ dateCreated: 2026-02-11T14:58:54.870Z
   </table>
 </figure>
 <p>&nbsp;</p>
+<p><span style="font-family:Arial, Helvetica, sans-serif;">Electrons in boxes diagram</span></p>
 <figure class="table">
   <table>
     <tbody>
       <tr>
+        <td style="text-align:center;width:60px;"><span style="font-family:Arial, Helvetica, sans-serif;">⇡⇣</span></td>
         <td style="text-align:center;width:60px;">&nbsp;</td>
+        <td style="text-align:center;width:60px;"><span style="font-family:Arial, Helvetica, sans-serif;">⇡⇣</span></td>
         <td style="text-align:center;width:60px;">&nbsp;</td>
-        <td style="text-align:center;width:60px;">&nbsp;</td>
-        <td style="text-align:center;width:60px;">&nbsp;</td>
-        <td style="text-align:center;width:60px;">&nbsp;</td>
-        <td style="text-align:center;width:60px;">&nbsp;</td>
-        <td style="text-align:center;width:60px;">&nbsp;</td>
-        <td style="text-align:center;width:60px;"><span style="font-family:Arial, Helvetica, sans-serif;">&nbsp;</span></td>
-        <td style="text-align:center;width:60px;"><span style="font-family:Arial, Helvetica, sans-serif;">&nbsp;</span></td>
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-        <td style="text-align:center;width:60px;"><span style="font-family:Arial, Helvetica, sans-serif;">&nbsp;</span></td>
+        <td style="text-align:center;width:60px;"><span style="font-family:Arial, Helvetica, sans-serif;">⇡⇣</span></td>
+        <td style="text-align:center;width:60px;"><span style="font-family:Arial, Helvetica, sans-serif;">⇡⇣</span></td>
+        <td style="text-align:center;width:60px;"><span style="font-family:Arial, Helvetica, sans-serif;">⇡⇣</span></td>
         <td style="text-align:center;width:60px;"><span style="font-family:Arial, Helvetica, sans-serif;">&nbsp;</span></td>
+        <td style="text-align:center;width:60px;"><span style="font-family:Arial, Helvetica, sans-serif;">⇡⇣&nbsp;</span></td>
         <td style="text-align:center;width:60px;"><span style="font-family:Arial, Helvetica, sans-serif;">&nbsp;</span></td>
+        <td style="text-align:center;width:60px;"><span style="font-family:Arial, Helvetica, sans-serif;">⇡⇣&nbsp;</span></td>
+        <td style="text-align:center;width:60px;"><span style="font-family:Arial, Helvetica, sans-serif;">&nbsp;⇡⇣</span></td>
+        <td style="text-align:center;width:60px;"><span style="font-family:Arial, Helvetica, sans-serif;">&nbsp;⇡</span></td>
       </tr>
       <tr>
         <td style="text-align:center;"><span style="font-family:Arial, Helvetica, sans-serif;">1s</span></td>