diff --git a/education/chemistry/1.html b/education/chemistry/1.html
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@@ -2,7 +2,7 @@
 title: 1
 description: 
 published: true
-date: 2026-02-11T15:08:47.596Z
+date: 2026-02-11T15:12:28.295Z
 tags: 
 editor: ckeditor
 dateCreated: 2026-02-11T14:58:54.870Z
@@ -84,3 +84,47 @@ dateCreated: 2026-02-11T14:58:54.870Z
   </table>
 </figure>
 <p>&nbsp;</p>
+<h3><span style="font-family:Arial, Helvetica, sans-serif;">Electronic configuration</span></h3>
+<p><span style="font-family:Arial, Helvetica, sans-serif;">There are subshells inside the shell.</span></p>
+<figure class="table">
+  <table>
+    <tbody>
+      <tr>
+        <td style="text-align:center;width:100px;"><span style="font-family:Arial, Helvetica, sans-serif;">Subshell</span></td>
+        <td style="text-align:center;width:100px;"><span style="font-family:Arial, Helvetica, sans-serif;">Orbitals</span></td>
+        <td style="text-align:center;width:100px;"><span style="font-family:Arial, Helvetica, sans-serif;">Max</span></td>
+        <td style="text-align:center;width:200px;"><span style="font-family:Arial, Helvetica, sans-serif;">Name</span></td>
+        <td style="text-align:center;width:300px;"><span style="font-family:Arial, Helvetica, sans-serif;">Quantum Number</span></td>
+      </tr>
+      <tr>
+        <td style="text-align:center;"><span style="font-family:Arial, Helvetica, sans-serif;">n</span></td>
+        <td style="text-align:center;"><span style="font-family:Arial, Helvetica, sans-serif;">1</span></td>
+        <td style="text-align:center;"><span style="font-family:Arial, Helvetica, sans-serif;">2</span></td>
+        <td style="text-align:center;"><span style="font-family:Arial, Helvetica, sans-serif;">s</span></td>
+        <td style="text-align:center;"><span style="font-family:Arial, Helvetica, sans-serif;">&nbsp;Principal</span></td>
+      </tr>
+      <tr>
+        <td style="text-align:center;"><span style="font-family:Arial, Helvetica, sans-serif;">l</span></td>
+        <td style="text-align:center;"><span style="font-family:Arial, Helvetica, sans-serif;">3</span></td>
+        <td style="text-align:center;"><span style="font-family:Arial, Helvetica, sans-serif;">6</span></td>
+        <td style="text-align:center;"><span style="font-family:Arial, Helvetica, sans-serif;">p<sub>x</sub>, p<sub>y</sub>, p<sub>z</sub></span></td>
+        <td style="text-align:center;"><span style="font-family:Arial, Helvetica, sans-serif;">Angular Momentum</span></td>
+      </tr>
+      <tr>
+        <td style="text-align:center;"><span style="font-family:Arial, Helvetica, sans-serif;">m</span></td>
+        <td style="text-align:center;"><span style="font-family:Arial, Helvetica, sans-serif;">5</span></td>
+        <td style="text-align:center;"><span style="font-family:Arial, Helvetica, sans-serif;">10</span></td>
+        <td style="text-align:center;"><span style="font-family:Arial, Helvetica, sans-serif;">d<sub>xy</sub>, d<sub>xz</sub>, d<sub>yz</sub>, d<sub>x<sup>2</sup>-y<sup>2</sup></sub>, d<sub>z<sup>2</sup></sub></span></td>
+        <td style="text-align:center;"><span style="font-family:Arial, Helvetica, sans-serif;">Magnetic</span></td>
+      </tr>
+      <tr>
+        <td style="text-align:center;"><span style="font-family:Arial, Helvetica, sans-serif;">s</span></td>
+        <td style="text-align:center;"><span style="font-family:Arial, Helvetica, sans-serif;">7</span></td>
+        <td style="text-align:center;"><span style="font-family:Arial, Helvetica, sans-serif;">14</span></td>
+        <td style="text-align:center;">&nbsp;</td>
+        <td style="text-align:center;"><span style="font-family:Arial, Helvetica, sans-serif;">Spin</span></td>
+      </tr>
+    </tbody>
+  </table>
+</figure>
+<p>&nbsp;</p>