strontium by Fabian Santillan-Sandoval https://padlet.com/santillan_sandoval_f/e5s27lkgeom6 en-us 2016-12-02 16:20:15 UTC 2016-12-02 16:43:19 UTC hello@padlet.com strontium santillan_sandoval_f https://padlet.com/santillan_sandoval_f/e5s27lkgeom6/wish/141428076 2016-12-02 16:22:06 UTC https://padlet.com/santillan_sandoval_f/e5s27lkgeom6/wish/141428076 facts about strontium santillan_sandoval_f https://padlet.com/santillan_sandoval_f/e5s27lkgeom6/wish/141428476 Symbol: Sr
Electron configuration : [Kr] 5s2
Atomic number: 3
Atomic mass: 87.62 u ± 0.01 u
Electrons per shell: 2,8,18,8,2
Discovered: 1790
Melting point: 1,416°F (768.8°C
]]> 2016-12-02 16:23:17 UTC https://padlet.com/santillan_sandoval_f/e5s27lkgeom6/wish/141428476 Who discovered ed Strontium santillan_sandoval_f https://padlet.com/santillan_sandoval_f/e5s27lkgeom6/wish/141430930 William Cruikshank discovered strontium trontium was recognized as a new element in 1790 when Adair Crawford analyzed a mineral sample from a lead mine near Strontian, Scotland. Until then scientists had thought strontium and barium were the same element, and only barium's existence had been recognized.]]> 2016-12-02 16:30:07 UTC https://padlet.com/santillan_sandoval_f/e5s27lkgeom6/wish/141430930 santillan_sandoval_f https://padlet.com/santillan_sandoval_f/e5s27lkgeom6/wish/141432043 2016-12-02 16:33:31 UTC https://padlet.com/santillan_sandoval_f/e5s27lkgeom6/wish/141432043 santillan_sandoval_f https://padlet.com/santillan_sandoval_f/e5s27lkgeom6/wish/141432326 2016-12-02 16:34:30 UTC https://padlet.com/santillan_sandoval_f/e5s27lkgeom6/wish/141432326