1 h <html>
PERIODIC TABLE OF HTML ELEMENTS
2 tr <tr>
3 i <img>
4 fm <form>

Here are all the HTML elements (I am aware of) in a periodic table format. The elements are divided into categories (mainly taken from W3schools), and the symbols are just letters from the element names and mean nothing.

6 p <p>
7 br <br>
8 hr <hr>
9 h1 <h1>
10 td <td>
11 m <map>
12 ip <input>
13 d <div>
15 bo <body>
16 he <head>
17 h2 <h2>
18 th <th>
19 ar <area>
20 tx <textarea>
21 b <b>
22 st <strong>
23 u <u>
24 pr <pre>
25 i <i>
26 em <em>
27 sm <small>
28 sup <sup>
29 sub <sub>
30 v <var>
31 sp <span>
32 st <style>
34 tl <title>
35 h3 <h3>
36 tb <tbody>
37 fi <figure>
38 btn <button>
39 bq <blockquote>
40 rp <rp>
41 rt <rt>
42 pr <progress>
43 me <meter>
44 ru <ruby>
45 ti <time>
46 wb <wbr>
47 acr <acronym>
48 bdo <bdo>
49 ma <main>
50 se <section>
51 co <column>
52 cg <colgroup>
53 h4 <h4>
54 thd <thead>
55 fc <figcaption>
56 sel <select>
57 - 71
72 ad <address>
73 ab <abbr>
74 cd <code>
75 sr <strike>
76 kb <kbd>
77 ci <cite>
78 df <dfn>
79 del <del>
80 bdi <bdi>
81 hea <header>
82 foo <footer>
83 asi <aside>
84 ca <caption>
85 h5 <h5>
86 tf <tfoot>
87 cvs <canvas>
88 op <option>
89 - 105
106 bg <big>
107 ct <center>
108 fo <font>
109 tt <tt>
110 in <ins>
111 smp <samp>
112 mk <mark>
113 s <s>
114 q <q>
115 art <article>
116 de <details>
117 su <summary>
118 di <dialog>
119 h6 <h6>
120 t <table>
57 og <optgroup>
58 lb <label>
59 dtl <datalist>
60 kg <keygen>
61 ot <output>
62 ld <legend>
63 fs <fieldset>
64 fr <frame>
65 frs <frameset>
66 nfr <noframe>
67 ifr <iframe>
68 au <audio>
69 vi <video>
70 tk <track>
71 src <source>
89 ol <ol>
90 ul <ul>
91 li <li>
92 dl <dl>
93 dt <dt>
94 dd <dd>
95 mn <menu>
96 mni <menuitem>
97 emb <embed>
98 app <applet>
99 prm <param>
100 obj <object>
101 scr <script>
102 nsc <noscript>
103 mt <meta>
104 bs <base>
105 bf <basefont>
HTML5
Not supported in HTML5.
Basic Elements
Text and Input
Formatting
Headings
Tables
Lists
Styles and Semantics
Images
Audio / Video
Program-ming
Frames
Fit to the screen width