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 |
|---|---|---|---|---|
| 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 |
| 181. | fcs@winnie (konghoying) | 42.93 | 93% | 2012-02-24 |
| 182. | 天使 (miku414) | 42.63 | — | 2010-06-21 |
| 183. | asder (wer123) | 42.59 | — | 2010-12-01 |
| 184. | KRIS (kyo2632) | 42.50 | — | 2010-03-05 |
| 185. | dionysus (dionysus123) | 42.29 | 27% | 2011-11-05 |
| 186. | chiu (chiuchiu) | 42.27 | — | 2010-09-18 |
| 187. | Pui (pui333) | 42.21 | 42% | 2013-07-17 |
| 188. | Pierre (radoom) | 41.80 | 67% | 2012-07-22 |
| 189. | Tammy (tammytam) | 41.76 | 23% | 2014-03-13 |
| 190. | Austin (austin1001) | 41.71 | 45% | 2016-06-03 |
| 191. | Sy (kaisy) | 41.30 | 53% | 2011-12-04 |
| 192. | ray (raytham) | 41.01 | 48% | 2012-02-03 |
| 193. | Eric (ericholanchai) | 40.99 | — | 2010-11-29 |
| 194. | KUO (lulukuo1216) | 40.87 | 79% | 2018-01-26 |
| 195. | Linda (bpobpodlp) | 40.42 | 51% | 2012-08-15 |
| 196. | Lilyan (daryllam1119) | 40.38 | 70% | 2015-02-08 |
| 197. | Hau Chi (a980622008) | 40.26 | 45% | 2012-08-02 |
| 198. | 人 (john3599) | 40.24 | — | 2010-11-26 |
| 199. | Yamata (yamata2999) | 40.07 | 71% | 2011-06-01 |
| 200. | Duncan (plxtakemehome) | 39.75 | 97% | 2012-03-07 |
| 201. | Gary (ckmok) | 39.72 | 47% | 2013-07-04 |
| 202. | Karman (greencat1318) | 39.60 | 95% | 2012-11-28 |
| 203. | JayCee (silvertree) | 39.54 | 38% | 2016-06-11 |
| 204. | Matrix (lcc1321) | 38.83 | — | 2010-06-21 |
| Universe | Races | Average WPM | First Race |
|---|---|---|---|
| Traditional Chinese | 475 | 48.96 | December 4, 2009 |