Example: biology
The Periodic Table of Elements
Jun 08, 2016 · np sm pu eu am gd cm tb bk dy cf ho es er fm tm md yb no lu lr b al c si n p o s f cl ne he ar hydrogen lithium sodium potassium beryllium magnesium calcium scandium titanium rubidium cesium francium ... 133 223 9 24 40 88 45 89 137 226 48 91 178 263 51 93 181 268 52 96 184 271 55 98 186 270 56 101 190 270 59 103 192 278 59 106 195 281 64 108 ...
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