| |
|
|
|
|
|
|
| |
||||||
| SCIENCE
discoveries |
ELEMENTs | Periodic
Table |
| ELEMENTs |
BCE |
. |
ELEMENTs |
1800 |
. |
ELEMENTs |
1900 |
| Gold |
? |
. |
Sodium |
07 |
. |
Radon |
00 |
| Silver |
? |
. |
Potassium |
07 |
. |
Lutetium |
07 |
| Copper |
? |
. |
Barium |
08 |
. |
Protractinium |
17 |
| Iron |
? |
. |
Calcium |
08 |
. |
Hafnium |
23 |
| Lead |
? |
. |
Magnesium |
08 |
. |
Rhenium |
23 |
| Tin |
? |
. |
Boron |
08 |
. |
Technetium |
37 |
| Mercury |
? |
. |
Iodine |
11 |
. |
Francium |
39 |
| Sulfur |
? |
. |
Lithium |
17 |
. |
Astatine |
40 |
| Carbon |
? |
. |
Cadmium |
17 |
. |
Neptunium |
40 |
| . |
CE |
. |
Selenium |
17 |
. |
Plutonium |
40 |
| Zinc |
1250 |
. |
Silicon |
24 |
. |
Curnium |
44 |
| Arsenic |
1250 |
. |
Zirconium |
24 |
. |
Americium |
44 |
| Antimony |
1550 |
. |
Aluminum |
27 |
. |
Promethium |
45 |
| Phosphorus |
1669 |
. |
Bromine |
26 |
. |
Berkelium |
49 |
| . |
1700 |
. |
Thorium |
28 |
. |
Californium |
50 |
| Cobalt |
35 |
. |
Lanthanum |
39 |
. |
Fermium |
52 |
| Platinum |
35 |
. |
Terbium |
43 |
. |
Einsteinium |
52 |
| Nickel |
51 |
. |
Erbium |
43 |
. |
Mendelevium |
55 |
| Bismuth |
53 |
. |
Ruthenium |
44 |
. |
Nobelium |
58 |
| Hydrogen |
66 |
. |
Cesium |
60 |
. |
Lawrencium |
61 |
| Nitrogen |
72 |
. |
Rubidium |
61 |
. |
Rutherfordium |
64 |
| Oxygen |
74 |
. |
Thallium |
61 |
. |
Dubnium |
67 |
| Chlorine |
74 |
. |
Indium |
63 |
. |
Seaborgium |
74 |
| Manganese |
74 |
. |
Fluorine |
66 |
. |
Bohrium |
75 |
| Molybdenum |
78 |
. |
Gallium |
75 |
. |
Meitnerium |
82 |
| Tellurium |
82 |
. |
Ytterbium |
78 |
. |
Hassium |
84 |
| Tungsten |
83 |
. |
Scandium |
78 |
. |
Ununnilium |
94 |
| Titanium |
91 |
. |
Holmium |
78 |
. |
Unuminium |
94 |
| Yttrium |
94 |
. |
Samarium |
79 |
. |
Unubium |
96 |
| Chromium |
97 |
. |
Thulium |
79 |
. |
. |
. |
| Beryllium |
98 |
. |
Gadolinium |
80 |
. |
. |
. |
| . |
1800 |
. |
Praseodymium |
85 |
. |
. |
. |
| Vanadium |
01 |
. |
Neodyium |
85 |
. |
. |
. |
| Niobium |
01 |
. |
Dysprosium |
86 |
. |
. |
. |
| Tantalum |
02 |
. |
Germanium |
86 |
. |
. |
. |
| Cerium |
03 |
. |
Europium |
90 |
. |
. |
. |
| Palladium |
03 |
. |
Argon |
94 |
. |
. |
. |
| Rhodium |
03 |
. |
Helium |
95 |
. |
. |
. |
| Osmium |
03 |
. |
Neon |
98 |
. |
. |
. |
| Iridium |
03 |
. |
Krypton |
98 |
. |
. |
. |
| . |
. |
. |
Polonium |
98 |
. |
. |
. |
| . |
. |
. |
Radium |
98 |
. |
. |
. |
| . |
. |
. |
Actinium |
99 |
. |
. |
. |
| . |
. |
. |
. |
. |
. |
. |
. |
| . |
. |
. |
. |
. |
. |
. |
. |
| . |
. |
. |
. |
. |
. |
. |
. |
| . |
. |
. |
. |
. |
. |
. |
. |
| ELEMENTs |
year |
. |
ELEMENTs |
year |
. |
ELEMENTs |
year |
| .SCIENCE
Discoveries |
Earth
Sci: |
Natural
Sci: |
|
| |||||
| ..HowOLDisit contents were researched on these www sites. | ||||||
|
Dates,
spelling, and factual accuracy are not guaranteed. |
||||||
©2000-2010
HowOLDisit.com
All
rights reserved in all media. |
||||||
hOii
tables of content
|
 |
 |
||||