| Historic (1865-12-01 to
2009-12-20) |
| Rank |
Entity Name |
Count |
Score |
Coref./Ref. |
| 1 |
II
|
1836 |
8385.6 |
  |
| 2 |
ruthenium
|
763 |
5933.7 |
  |
| 3 |
CO
|
704 |
4961.4 |
  |
| 4 |
Cl
|
642 |
4430.8 |
  |
| 5 |
III
|
712 |
3810.3 |
  |
| 6 |
Pt
|
322 |
2713.1 |
  |
| 7 |
CN
|
299 |
2633.4 |
  |
| 8 |
NH3
|
258 |
2481.1 |
  |
| 9 |
Fe
|
324 |
2425.7 |
  |
| 10 |
PF6
|
233 |
2295.7 |
  |
| 11 |
PF
|
245 |
2280.1 |
  |
| 12 |
Rh
|
246 |
2150.7 |
  |
| 13 |
NH
|
231 |
1898.5 |
  |
| 14 |
NO
|
240 |
1876.7 |
  |
| 15 |
Pd
|
205 |
1823.3 |
  |
|
| 10 years (1999-12-23 to
2009-12-20) |
| Rank |
Entity Name |
Count |
Score |
Coref./Ref. |
| 1 |
II
|
1721 |
6791.6 |
  |
| 2 |
ruthenium
|
706 |
4987.6 |
  |
| 3 |
CO
|
703 |
4407.5 |
  |
| 4 |
Cl
|
636 |
3913.6 |
  |
| 5 |
III
|
611 |
2912.7 |
  |
| 6 |
CN
|
288 |
2311.6 |
  |
| 7 |
Pt
|
282 |
2168.7 |
  |
| 8 |
PF
|
245 |
2087.8 |
  |
| 9 |
PF6
|
226 |
2049.6 |
  |
| 10 |
Fe
|
290 |
1950.8 |
  |
| 11 |
NH3
|
197 |
1757.5 |
  |
| 12 |
NO
|
237 |
1666.3 |
  |
| 13 |
NH
|
224 |
1664.4 |
  |
| 14 |
Rh
|
200 |
1633.6 |
  |
| 15 |
Pd
|
173 |
1401.8 |
  |
|
| 365 days (2008-12-20 to
2009-12-20) |
| Rank |
Entity Name |
Count |
Score |
Coref./Ref. |
| 1 |
II
|
125 |
483.9 |
  |
| 2 |
ruthenium
|
59 |
384.0 |
  |
| 3 |
PF
|
42 |
295.3 |
  |
| 4 |
Cl
|
47 |
252.1 |
  |
| 5 |
CO
|
31 |
177.2 |
  |
| 6 |
III
|
38 |
163.5 |
  |
| 7 |
NH
|
28 |
162.6 |
  |
| 8 |
Fe
|
23 |
140.2 |
  |
| 9 |
RuCl
|
16 |
127.3 |
  |
| 10 |
VI
|
14 |
126.2 |
  |
| 11 |
Pt
|
17 |
119.5 |
  |
| 12 |
electrochemiluminescence
|
15 |
119.2 |
  |
| 13 |
`` Ir ''
|
15 |
118.0 |
  |
| 14 |
hydrogen
|
21 |
113.0 |
  |
| 15 |
NO
|
13 |
104.6 |
  |
|