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List

[edit]

Period: 2025-04-01 to 2025-04-30

Total views: 4,858,731

Updated: 05:53, 7 May 2025 (UTC)

Rank Page title Views Daily average Assessment Importance
1 Periodic table 323,151 10,771 FA Top
2 Rare-earth element 96,948 3,231 C Mid
3 Gold 93,823 3,127 B Top
4 Hydrogen 65,149 2,171 FA Top
5 Aluminium 64,437 2,147 GA Top
6 Mercury (element) 56,793 1,893 GA Top
7 Iron 53,782 1,792 GA Top
8 Copper 53,057 1,768 GA Top
9 Oxygen 52,917 1,763 FA Top
10 Tungsten 48,984 1,632 GA Top
11 Sulfur 48,390 1,613 B Top
12 Lead 48,008 1,600 FA Top
13 Magnesium 45,914 1,530 B Top
14 Uranium 45,028 1,500 B Top
15 Atom 44,447 1,481 B Mid
16 Carbon 44,239 1,474 GA Top
17 Lithium 43,049 1,434 GA Top
18 Nitrogen 42,672 1,422 GA Top
19 Potassium 42,467 1,415 GA Top
20 Sodium 40,763 1,358 GA Top
21 Silver 40,694 1,356 GA Top
22 Silicon 39,588 1,319 GA Top
23 Tin 39,015 1,300 B Top
24 List of chemical elements 38,910 1,297 List Top
25 Helium 37,437 1,247 B Top
26 Bismuth 37,433 1,247 GA High
27 Titanium 37,281 1,242 B Top
28 Chlorine 37,156 1,238 GA Top
29 Cobalt 37,126 1,237 GA Top
30 Phosphorus 36,252 1,208 B Top
31 Platinum 36,179 1,205 GA Top
32 Chemical element 36,113 1,203 C Top
33 Zinc 34,466 1,148 FA Top
34 Arsenic 34,233 1,141 B Top
35 Antimony 34,189 1,139 GA High
36 Boron 33,126 1,104 GA Top
37 Plutonium 32,132 1,071 FA Top
38 Oganesson 31,374 1,045 FA High
39 Palladium 31,068 1,035 B High
40 Chromium 31,048 1,034 GA Top
41 Alchemical symbol 30,155 1,005 List Low
42 Gallium 30,078 1,002 GA High
43 Nickel 29,881 996 GA Top
44 Iodine 29,797 993 GA Top
45 Selenium 29,341 978 GA Top
46 Thorium 28,245 941 FA High
47 Metal 27,865 928 B Top
48 Manganese 26,198 873 GA Top
49 Radon 26,004 866 B Top
50 Osmium 25,272 842 GA High
51 Tritium 24,621 820 B Mid
52 Bromine 24,389 812 GA Top
53 Calcium 24,118 803 GA Top
54 Fluorine 23,354 778 FA Top
55 Beryllium 23,325 777 GA High
56 Molybdenum 23,285 776 GA High
57 Iridium 23,234 774 B High
58 Dmitri Mendeleev 23,090 769 B Top
59 Radium 22,371 745 GA High
60 Noble gas 22,253 741 FA High
61 Atomic number 22,175 739 C Top
62 Deuterium 22,033 734 B Mid
63 Half-life 21,503 716 C Mid
64 Group (periodic table) 20,680 689 C Mid
65 Caesium 20,316 677 FA High
66 Argon 19,961 665 B Top
67 Isotope 19,746 658 C High
68 Neon 19,663 655 B Top
69 Extended periodic table 19,547 651 B Mid
70 Dysprosium 19,536 651 GA Mid
71 Radiocarbon dating 19,380 646 FA High
72 Neodymium 18,617 620 B High
73 Vanadium 18,461 615 GA High
74 Lanthanide 18,222 607 B Mid
75 Yttrium 18,064 602 FA High
76 Polonium 18,005 600 GA High
77 Activated carbon 17,998 599 C Low
78 Caesium-137 17,645 588 C Low
79 Age of Earth 17,565 585 B Mid
80 Uranium-235 17,423 580 Start Low
81 Tantalum 17,214 573 GA High
82 Sterling silver 16,913 563 B Low
83 Gadolinium 16,871 562 C High
84 Cadmium 16,664 555 GA High
85 Rhodium 16,494 549 GA High
86 Astatine 16,421 547 FA Mid
87 Xenon 16,416 547 FA High
88 Zirconium 16,247 541 GA High
89 Red mercury 16,010 533 Start Low
90 Indium 15,640 521 GA High
91 Francium 15,516 517 FA High
92 Ununennium 14,876 495 GA Low
93 Thallium 14,852 495 GA High
94 Lise Meitner 14,695 489 FA Low
95 Abundance of the chemical elements 14,668 488 B High
96 Transition metal 14,652 488 B Mid
97 Helium-3 14,196 473 B Mid
98 Germanium 14,042 468 FA Top
99 Abundance of elements in Earth's crust 13,853 461 List Mid
100 Technetium 13,840 461 FA Top
101 Tennessine 13,774 459 FA Mid
102 Halogen 13,689 456 B High
103 Niobium 13,663 455 FA High
104 Isotopes of hydrogen 13,662 455 List Low
105 Hydrogen atom 13,509 450 C Low
106 Krypton 13,490 449 GA High
107 White phosphorus 13,095 436 C Low
108 Uranium-238 13,017 433 C Mid
109 Alkali metal 12,999 433 GA High
110 Scandium 12,912 430 GA High
111 Barium 12,404 413 GA High
112 Moscovium 12,379 412 GA Mid
113 Chemical symbol 12,313 410 List High
114 Oxidation state 12,213 407 B Low
115 Samarium 12,079 402 GA High
116 Tellurium 12,078 402 GA High
117 Heavy metals 11,835 394 B Mid
118 Californium 11,790 393 FA Mid
119 Strontium 11,729 390 GA High
120 Electron configurations of the elements (data page) 11,657 388 List High
121 Gold mining 11,504 383 C Mid
122 Cobalt-60 11,314 377 C Low
123 Nonmetal 11,284 376 GA Mid
124 Unobtainium 11,260 375 C Low
125 Plutonium-239 11,135 371 C Low
126 Actinide 11,097 369 C Mid
127 Carbon-14 11,054 368 B High
128 Promethium 10,647 354 GA Mid
129 Americium 10,584 352 GA Mid
130 Metallic hydrogen 10,440 348 B Low
131 Ruthenium 10,371 345 GA High
132 Rhenium 10,147 338 GA High
133 Discovery of chemical elements 10,101 336 C High
134 Island of stability 10,093 336 FA Mid
135 Rubidium 9,982 332 GA High
136 Block (periodic table) 9,920 330 C Mid
137 Atomic mass 9,711 323 C Top
138 Lanthanum 9,379 312 GA Mid
139 Otto Hahn 9,338 311 FA Low
140 Alkaline earth metal 9,294 309 B Mid
141 Lithium nickel manganese cobalt oxides 9,196 306 C Low
142 Cerium 9,043 301 B Mid
143 Einsteinium 8,835 294 GA Mid
144 Hafnium 8,792 293 GA High
145 Metalloid 8,702 290 FA Mid
146 Noble metal 8,573 285 C Mid
147 Terbium 8,542 284 GA Mid
148 Primordial nuclide 8,516 283 Start Low
149 Glenn T. Seaborg 8,507 283 GA Mid
150 Lutetium 8,385 279 GA Mid
151 Radionuclide 8,385 279 C Low
152 Neptunium 8,308 276 GA Mid
153 Iodine-131 7,896 263 B Low
154 Allotropy 7,792 259 C Low
155 Polonium-210 7,760 258 B Mid
156 Prices of chemical elements 7,685 256 List Low
157 Praseodymium 7,652 255 GA High
158 Synthetic element 7,578 252 C Mid
159 List of radioactive nuclides by half-life 7,382 246 List Low
160 Nihonium 7,302 243 FA Mid
161 Livermorium 7,265 242 GA Mid
162 History of the periodic table 7,243 241 C Mid
163 Copernicium 7,241 241 GA Mid
164 Fissile material 7,216 240 C Low
165 Ytterbium 7,197 239 GA Mid
166 Allotropes of carbon 7,186 239 C Low
167 Flerovium 7,078 235 GA Mid
168 Isotopes of uranium 7,017 233 List Low
169 Europium 6,982 232 GA Mid
170 Plutonium-238 6,975 232 C Low
171 Actinium 6,885 229 GA Mid
172 Decay chain 6,806 226 C Low
173 Mineral (nutrient) 6,795 226 B Mid
174 Curium 6,752 225 GA Mid
175 Mercury 6,652 221 Disambig NA
176 List of fictional elements, materials, isotopes and subatomic particles 6,648 221 List Low
177 Americium-241 6,586 219 C Low
178 Strontium-90 6,556 218 C Low
179 Radiometric dating 6,539 217 B Mid
180 Period (periodic table) 6,416 213 C Mid
181 Atomic radius 6,410 213 C Low
182 Technetium-99m 6,167 205 B Low
183 Chalcogen 6,156 205 B Mid
184 Platinum group 6,079 202 C Low
185 Roentgenium 6,048 201 GA Mid
186 Protactinium 5,989 199 GA Mid
187 List of gold nuggets by size 5,917 197 Start Low
188 Allotropes of oxygen 5,879 195 C Low
189 Holmium 5,859 195 GA Mid
190 Pnictogen 5,823 194 B Mid
191 Periodic trends 5,822 194 C Low
192 Unbinilium 5,809 193 GA Low
193 Lawrencium 5,692 189 GA Mid
194 Red phosphorus 5,653 188 Start Low
195 Isotopes of lithium 5,428 180 List Low
196 Table of nuclides 5,409 180 List Mid
197 Potassium-40 5,407 180 C Mid
198 Thulium 5,406 180 GA Mid
199 Seaborgium 5,269 175 GA Mid
200 Isotopes of lead 5,173 172 List Low
201 Atomic radii of the elements (data page) 5,118 170 List Low
202 Isotopes of carbon 5,112 170 List Low
203 Erbium 5,097 169 B Mid
204 Rutherfordium 5,095 169 GA Mid
205 Neutronium 5,068 168 C Low
206 Positronium 5,041 168 C Low
207 Transuranium element 4,988 166 C Low
208 Berkelium 4,908 163 GA Mid
209 Hassium 4,880 162 FA Mid
210 Allotropes of iron 4,870 162 C Low
211 Meitnerium 4,857 161 GA Mid
212 Nuclear isomer 4,856 161 C High
213 Isotopes of nickel 4,778 159 List Low
214 Nobelium 4,757 158 GA Mid
215 Darmstadtium 4,751 158 GA Mid
216 Isotopes of helium 4,728 157 List Low
217 Carbon-12 4,713 157 Start Low
218 Fermium 4,696 156 GA Mid
219 Stable nuclide 4,653 155 C Low
220 Uranium-233 4,619 153 C Low
221 Post-transition metal 4,616 153 B Low
222 History of aluminium 4,491 149 FA Low
223 Austenite 4,467 148 C Low
224 Nucleosynthesis 4,463 148 C Low
225 Allotropes of phosphorus 4,341 144 B Low
226 Isotopes of thorium 4,315 143 List Low
227 Standard atomic weight 4,289 142 Start High
228 Helium-4 4,288 142 C Low
229 Dubnium 4,209 140 FA Mid
230 Yuri Oganessian 4,151 138 C Mid
231 Bohrium 4,131 137 GA Mid
232 Mendelevium 4,042 134 GA Mid
233 Native metal 4,037 134 C Low
234 Isotopes of caesium 3,964 132 List Low
235 Molar ionization energies of the elements 3,951 131 List Low
236 Electronegativities of the elements (data page) 3,948 131 List Low
237 Unbiunium 3,935 131 GA Low
238 Iron in folklore 3,931 131 Start Low
239 List of elements by stability of isotopes 3,881 129 List Mid
240 Types of periodic tables 3,869 128 B Low
241 Natural hydrogen 3,784 126 C Low
242 Isotopes of oxygen 3,733 124 List Low
243 Thorium-232 3,701 123 Start Low
244 Isotopes of xenon 3,594 119 List Low
245 Isotopes of plutonium 3,548 118 List Low
246 Isotopes of nitrogen 3,539 117 List Low
247 Metals of antiquity 3,510 117 Start Low
248 Superheavy element 3,425 114 C Low
249 Actinium-225 3,372 112 C Low
250 List of chemical element name etymologies 3,287 109 List Low
251 Antihydrogen 3,195 106 C Low
252 Aluminum 3,184 106 Redirect NA
253 Isotopes of iron 3,178 105 List Low
254 Hardnesses of the elements (data page) 3,172 105 List Low
255 Nuclide 3,147 104 C Low
256 Isotopes of iodine 3,142 104 List Low
257 Bismuth-209 3,046 101 B Low
258 Boron group 2,971 99 B Low
259 Goldschmidt classification 2,923 97 Start Low
260 List of countries by silicon production 2,869 95 List Low
261 Xenon-135 2,853 95 C Low
262 Toxic heavy metal 2,847 94 C Mid
263 Mendeleev's predicted elements 2,840 94 C High
264 Uranium–lead dating 2,831 94 Start Low
265 Carbon group 2,819 93 C Mid
266 Unbibium 2,815 93 GA Low
267 Radium-226 2,797 93 Start NA
268 Isotopes of tellurium 2,791 93 List Low
269 Isotopes of neptunium 2,765 92 List Low
270 Isotopes of cobalt 2,747 91 List Low
271 Isotopes of sodium 2,721 90 List Low
272 Carbon-13 2,692 89 C Low
273 Fluorine-18 2,667 88 C Low
274 Selenium in biology 2,619 87 C Low
275 Group 3 element 2,575 85 GA Low
276 List of chemical elements named after people 2,493 83 List Mid
277 Helium atom 2,476 82 C Low
278 Δ13C 2,474 82 C Low
279 CHNOPS 2,451 81 Start Low
280 Isobar (nuclide) 2,448 81 Start Low
281 Isotopes of bismuth 2,436 81 List Low
282 Isotopes of barium 2,394 79 List Low
283 Coinage metals 2,363 78 Start Low
284 Isotopes of gold 2,348 78 List Low
285 Isotopes of beryllium 2,321 77 List Low
286 Unbitrium 2,314 77 Redirect Low
287 Solid nitrogen 2,311 77 C Mid
288 Technetium-99 2,279 75 C Low
289 Refractory metals 2,274 75 B Low
290 Isotopes of polonium 2,248 74 List Low
291 Isotopes of thallium 2,231 74 List Low
292 Isotopes of protactinium 2,224 74 List Low
293 Solid hydrogen 2,220 74 Start Low
294 Ionization energies of the elements (data page) 2,176 72 List Low
295 Isotopes of radium 2,160 72 List Low
296 Uranium-236 2,146 71 C Low
297 Group 11 element 2,111 70 C Low
298 Allotropes of sulfur 2,103 70 B Low
299 Unbihexium 2,043 68 GA Low
300 Isotopes of boron 2,014 67 List Low
301 Radon-222 2,004 66 Start Low
302 Electron affinity (data page) 2,003 66 List Low
303 Natural uranium 1,989 66 Start Mid
304 Isotopes of argon 1,949 64 List Low
305 Muonium 1,947 64 Stub Low
306 Isotopes of tungsten 1,943 64 List Low
307 Lanthanide contraction 1,910 63 C Low
308 Occurrence of thorium 1,906 63 Start Low
309 Naming of chemical elements 1,901 63 Start Mid
310 Isotopes of chlorine 1,873 62 List Low
311 Iridium-192 1,865 62 Start Low
312 Isotopes of copper 1,855 61 List Low
313 Uranium-234 1,844 61 Start Low
314 Isotopes of americium 1,831 61 List Low
315 Isotopes of tantalum 1,815 60 List Low
316 Isotopes of mercury 1,800 60 List Low
317 List of chemical elements named after places 1,787 59 List Mid
318 Isotopes of samarium 1,755 58 List Low
319 Yttrium-90 1,731 57 Start Low
320 Oxygen-18 1,730 57 C Low
321 Argentium sterling silver 1,719 57 Start Low
322 Carbon compounds 1,714 57 C Mid
323 List of CAS numbers by chemical compound 1,697 56 List Low
324 Isotopes of molybdenum 1,685 56 List Low
325 Isotopes of krypton 1,678 55 List Low
326 Valley of stability 1,669 55 B Low
327 Isotopes of tin 1,655 55 List Low
328 Isotopes of radon 1,651 55 List Low
329 Cosmic ray spallation 1,650 55 Stub Low
330 Melting points of the elements (data page) 1,645 54 List Low
331 List of nuclides 1,643 54 List Low
332 Isotopes of zirconium 1,602 53 List Low
333 Isotopes of sulfur 1,597 53 List Low
334 Isotopes of potassium 1,556 51 List Low
335 Nuclear drip line 1,556 51 C Low
336 Isotopes of calcium 1,555 51 List Low
337 Isotopes of silicon 1,554 51 List Low
338 Tin pest 1,534 51 C Low
339 Group 12 element 1,529 50 GA Low
340 Iron-56 1,527 50 Start Low
341 Isotopes of curium 1,524 50 List Low
342 Trace radioisotope 1,516 50 Stub Low
343 Isotopes of fluorine 1,516 50 List Low
344 Isotopes of strontium 1,509 50 List Low
345 Isotopes of lutetium 1,507 50 List Low
346 Isotopes of silver 1,506 50 List Low
347 Fission products (by element) 1,492 49 List Low
348 Isotopes of rubidium 1,489 49 List Low
349 Plutonium-240 1,473 49 Start Low
350 Isotopes of magnesium 1,448 48 List Low
351 Beryllium-8 1,442 48 Start Low
352 Absolute dating 1,431 47 C Mid
353 Boiling points of the elements (data page) 1,430 47 List Low
354 Main-group element 1,421 47 Start Mid
355 Isotopes of californium 1,405 46 List Low
356 Group 4 element 1,382 46 GA Low
357 Isotopes of palladium 1,356 45 List Low
358 Isotopes of cadmium 1,342 44 List Low
359 Isotopic labeling 1,340 44 C Mid
360 Period 7 element 1,330 44 C Low
361 Group 8 element 1,326 44 C Low
362 Aluminium-26 1,318 43 Start Low
363 Plutonium-244 1,310 43 Start Low
364 Group 6 element 1,308 43 C Low
365 Plutonium-241 1,305 43 Start Low
366 Systematic element name 1,301 43 Start Low
367 Phosphorus-32 1,299 43 C Low
368 Group 5 element 1,282 42 GA Low
369 Isotopes of iridium 1,281 42 List Low
370 Isotopes of zinc 1,281 42 List Low
371 Radium-223 1,259 41 C Low
372 Technetium-99m generator 1,258 41 Start Low
373 Isotopes of ruthenium 1,245 41 List Low
374 Isotopes of aluminium 1,243 41 List Low
375 Speeds of sound of the elements 1,239 41 List Low
376 Isotopes of gallium 1,235 41 List Low
377 Properties of metals, metalloids and nonmetals 1,231 41 C Mid
378 Densities of the elements (data page) 1,224 40 List Low
379 Isotopes of platinum 1,202 40 List Low
380 Symbol (chemistry) 1,192 39 Redirect NA
381 Uranium-232 1,186 39 Stub Low
382 Vapor pressures of the elements (data page) 1,184 39 List Low
383 Nitrogen compounds 1,182 39 B Mid
384 Iodine-125 1,180 39 C Low
385 Isotopes of titanium 1,171 39 List Low
386 Period 6 element 1,170 39 C Low
387 Isotopes of indium 1,170 39 List Low
388 Dividing line between metals and nonmetals 1,158 38 B Low
389 Isotopes of astatine 1,144 38 List Low
390 Isotopes of neon 1,143 38 List Low
391 Group 7 element 1,142 38 B Low
392 Period 2 element 1,140 38 B Low
393 Cosmogenic nuclide 1,139 37 Start Low
394 Light metal 1,138 37 Stub Low
395 Synthetic radioisotope 1,133 37 Start Mid
396 Isotopes of germanium 1,129 37 List Low
397 Isotopes of technetium 1,125 37 List Low
398 Fluorine compounds 1,123 37 B Low
399 History of fluorine 1,119 37 B Low
400 Isotopes of actinium 1,117 37 List Low
401 Isotopes of rhenium 1,101 36 List Low
402 Iodine-123 1,095 36 C Low
403 Isotopes of francium 1,093 36 List Low
404 Isotopes of phosphorus 1,091 36 List Low
405 Free element 1,083 36 Stub Low
406 Isotopes of hafnium 1,076 35 List Low
407 Gold compounds 1,068 35 B Low
408 Krypton-85 1,066 35 C Low
409 Isotopes of antimony 1,063 35 List Low
410 Diagonal relationship 1,062 35 Start Low
411 Commonly used gamma-emitting isotopes 1,058 35 C Low
412 Isotopes of neodymium 1,057 35 List Low
413 Xenon compounds 1,051 35 B Low
414 Isotopes of europium 1,048 34 List Low
415 Isotopes of bromine 1,047 34 List Low
416 Isotopes of chromium 1,039 34 List Low
417 Oxygen-16 1,035 34 Stub Mid
418 Sulphur 1,034 34 Redirect NA
419 Isotopes of osmium 1,032 34 List Low
420 Periodic table (crystal structure) 1,024 34 List Low
421 Albert Ghiorso 1,005 33 C Mid
422 Period 4 element 1,001 33 C Low
423 Isotopes of manganese 999 33 List Low
424 Period 3 element 998 33 C Low
425 Iodine-129 992 33 C Low
426 Tho-Radia 990 33 C Low
427 Continent of stability 972 32 Stub Low
428 Gold-198 971 32 Start Low
429 Gold parting 967 32 B Low
430 Chemical elements in East Asian languages 965 32 Start Low
431 D-block 961 32 Redirect NA
432 Isotopes of niobium 956 31 List Low
433 Transfermium Wars 951 31 Start Low
434 Isotopes of gadolinium 951 31 List Low
435 Stable isotope ratio 948 31 Start Low
436 Behavior of nuclear fuel during a reactor accident 944 31 C Low
437 Isotopes of selenium 942 31 List Low
438 Tellurium-128 941 31 Redirect NA
439 Monoisotopic element 936 31 C Low
440 Group 10 element 931 31 C Low
441 Period 1 element 916 30 GA Low
442 Sulfur compounds 914 30 Start Mid
443 Names for sets of chemical elements 903 30 List Low
444 Period 5 element 901 30 C Low
445 Iron compounds 892 29 B Mid
446 Nickel-62 890 29 Start Low
447 Beryllium-10 887 29 Start Low
448 Copper-64 881 29 C Low
449 Group 9 element 873 29 C Low
450 Abundances of the elements (data page) 868 28 List Low
451 Isotopes of promethium 856 28 List Low
452 Periodic Videos 851 28 Start Low
453 Cesium 850 28 Redirect NA
454 Copper compounds 842 28 C Mid
455 Delftia acidovorans 832 27 Start Low
456 Isotopes of yttrium 831 27 List Low
457 F-block 822 27 Redirect NA
458 Isotopes of oganesson 822 27 List Low
459 Isotopes of ytterbium 821 27 List Low
460 Element collecting 821 27 C Low
461 List of chemical element naming controversies 818 27 List Low
462 Unbiquadium 808 26 GA Low
463 Isotopic signature 790 26 Start Low
464 Isotopes of lanthanum 787 26 List Low
465 Iron-55 784 26 C Low
466 Isotopes of rhodium 782 26 List Low
467 Isotopes of dysprosium 772 25 List Low
468 Neptunium-237 769 25 Redirect NA
469 Caesium-133 761 25 Redirect NA
470 Isotopes of vanadium 735 24 List Low
471 Isotopes of cerium 726 24 List Low
472 Zinc compounds 709 23 C Mid
473 Oxygen-17 708 23 Start Low
474 Bone seeker 706 23 Stub Low
475 Isotopes of livermorium 704 23 List Low
476 Isotopes of scandium 697 23 List Low
477 List of countries by palladium production 690 23 List Low
478 Protonium 684 22 Start Low
479 Calcium-48 681 22 Start Low
480 Silver certificate 666 22 Start Low
481 Allotropes of plutonium 663 22 Start Low
482 Silver compounds 658 21 B Mid
483 Electrical resistivities of the elements (data page) 657 21 List Low
484 Isotopes of holmium 657 21 List Low
485 Aluminium compounds 652 21 B Low
486 Tungsten-180 649 21 Redirect NA
487 Ausenium and hesperium 648 21 Start Low
488 Isotopes of flerovium 644 21 List Low
489 Plutonium-242 642 21 Start Low
490 Isotopes of copernicium 639 21 List Low
491 Lead compounds 637 21 B Mid
492 Helion (chemistry) 628 20 Stub Low
493 Lithium atom 625 20 Stub Low
494 Isotopes of terbium 624 20 List Low
495 Mercury cycle 623 20 C Low
496 Chlorine-36 617 20 Start Low
497 Indium-111 613 20 Start NA
498 Chromium compounds 612 20 B Mid
499 Silicon compounds 610 20 B Mid
500 Hard carbon 610 20 Stub Low