Difference between revisions 472391631 and 489379359 on enwiki

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! scope="col" style="width: 1.0%;" | [[Periodic table group|Group]] #
! scope="col" style="width: 5.5%;" | [[Alkali metal|1]]
! scope="col" style="width: 5.5%;" | [[Alkaline earth metal|2]]
(contracted; show full)| {{element cell|101|mendelevium|Md|[258.0984]  |Solid|1950-1999|Synthetic}}
| {{element cell|102|nobelium   |No|[259.1011]  |Solid|1950-1999|Synthetic}}
| {{element cell|103|lawrencium |Lr|[262.110]   |Solid|1950-1999|Synthetic}}
| <br />
|}

'''Legend'''
* {{colorbox|
#DDDDDD{{element color/Before 1800}}}} Before 1800 (34 elements): discoveries during and before the [[History of the periodic table#Age of Enlightenment|age of enlightenment]].
* {{colorbox|#C1AD84{{element color/1800-1849}}}} 1800–1849 (24 elements):  scientific and [[Industrial Revolution|industrial]] revolutions. 
* {{colorbox|#FBCB83{{element color/1850-1899}}}} 1850–1899 (26 elements):  the age of [[History of the periodic table#Classifying Elements|classifying elements]]; application of [[Spectrum analysis#Origins|spectrum analysis]] techniques: Boisbaudran, Bunsen, Crookes, Kirchhoff, and others "hunting [[emission line]] signatures".
* {{colorbox|#AAD26E{{element color/1900-1949}}}} 1900–1949 (13 elements):  development of [[old quantum theory]] and [[quantum mechanics]].
* {{colorbox|#6CACDE{{element color/1950-1999}}}} 1950–1999 (16 elements):  post Manhattan project; [[Synthetic element|synthesis]] of atomic numbers 98 and above ([[collider]]s, bombardment techniques).
* {{colorbox|#FC86F6{{element color/2000-present}}}} Since 2000 (5 elements): recent synthesis.
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[[Category:Periodic table]]
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