在化學元素是由方式的電子被安排在原子。這種安排是根據現代週期分類元素：週期表。
—from Structure and Bonding (Basic Concepts in Chemistry) (結構和成鍵（基本概念，化學）), a book by Jack Barrett
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| Rank | Username | WPM | Accuracy | Date |
|---|---|---|---|---|
| 151. | 黃 (tesa731) | 48.95 | 70% | 2016-05-23 |
| 152. | Lei (ryanrem888) | 48.82 | 46% | 2014-07-25 |
| 153. | elctp (elctpho) | 48.74 | 80% | 2014-03-11 |
| 154. | cheung (msiammei) | 48.66 | 91% | 2011-08-03 |
| 155. | LI (justforsing) | 48.29 | — | 2010-04-24 |
| 156. | Jimmy (rjawsjwqu) | 48.26 | 91% | 2012-08-28 |
| 157. | leon (leonwiththelord) | 47.59 | 26% | 2015-02-14 |
| 158. | rain man (luvme_jkr@hotmail... | 47.53 | 78% | 2011-06-24 |
| 159. | Luffy (y2k430) | 46.98 | 49% | 2012-04-30 |
| 160. | Rai (saigonorai) | 46.42 | — | 2010-11-12 |
| 161. | a (abc1231) | 46.37 | 87% | 2012-04-20 |
| 162. | bigballtwo (bigballtwo) | 46.32 | — | 2010-08-07 |
| 163. | Roy (roycwc) | 46.26 | — | 2010-11-23 |
| 164. | L (alexchting) | 46.23 | 32% | 2013-10-21 |
| 165. | Concentration (sighsigh) | 45.81 | 61% | 2012-06-11 |
| 166. | Anastasia (anastasia88888) | 45.51 | 20% | 2012-02-10 |
| 167. | Jacky (jacky0206) | 45.33 | 45% | 2012-06-21 |
| 168. | Taylor (taystyle124) | 45.26 | 33% | 2013-05-20 |
| 169. | Weichun (ishyun) | 45.23 | 29% | 2011-12-08 |
| 170. | Shing (ssshing) | 44.85 | 50% | 2012-11-25 |
| 171. | 點解練極都咁慢 (edgod) | 44.76 | — | 2010-12-26 |
| 172. | tungtung (ttungttung) | 44.63 | 35% | 2013-05-15 |
| 173. | 劉綠雲 (hhoouu) | 44.54 | 100% | 2013-05-21 |
| 174. | Helen (qinmgy) | 44.17 | 91% | 2012-06-22 |
| 175. | Carin (carinchang27) | 43.97 | 21% | 2014-04-09 |
| 176. | celina(01) (celina01) | 43.79 | 87% | 2017-06-26 |
| 177. | 李 (maymaylee) | 43.47 | 67% | 2013-09-24 |
| 178. | Lovebird (shirleylove) | 43.14 | 51% | 2012-10-05 |
| 179. | edflik (1121212) | 43.08 | — | 2010-07-01 |
| 180. | Jack (abcjack) | 43.02 | — | 2010-11-26 |
| Universe | Races | Average WPM | First Race |
|---|---|---|---|
| Traditional Chinese | 475 | 48.96 | December 4, 2009 |