v*********n
发帖数: 573 | 1 William Crookes (1832-1919)
Claude-Auguste Lamy (1820-1878)
Thallium is a chemical element with symbol Tl and atomic number 81. This
soft gray post-transition metal is not found free in nature. When isolated,
it resembles tin, but discolors when exposed to air. Chemists William
Crookes and Claude-Auguste Lamy discovered thallium independently in 1861,
in residues of sulfuric acid production. Both used the newly developed
method of flame spectroscopy, in which thallium produces a notable green
spectral line. | y*****y
发帖数: 1208 | 2 retard, thallium doesn't kill. people who use thallium kill.... | C**********r
发帖数: 8189 | 3 超穷人，希望你下次骂人可以有骨气，不要赤脚逃跑。 | t****7
发帖数: 11132 | 4 good point.
【在 y*****y 的大作中提到】
: retard, thallium doesn't kill. people who use thallium kill....
| a******e
发帖数: 36306 | 5 你有没有看过白马酒店？
,
【在 v*********n 的大作中提到】
: William Crookes (1832-1919)
: Claude-Auguste Lamy (1820-1878)
: Thallium is a chemical element with symbol Tl and atomic number 81. This
: soft gray post-transition metal is not found free in nature. When isolated,
: it resembles tin, but discolors when exposed to air. Chemists William
: Crookes and Claude-Auguste Lamy discovered thallium independently in 1861,
: in residues of sulfuric acid production. Both used the newly developed
: method of flame spectroscopy, in which thallium produces a notable green
: spectral line.
|
|
