Cov txheej txheem:

Leej twg nrhiav tau astatine 85?
Leej twg nrhiav tau astatine 85?
Anonim

Qhov kev tshawb pom ntawm lub caij 85 tau tsim los ntawm peb tus kws tshawb fawb Berkeley, Dale Corson, Alexander MacKenzie, thiab Emilio Segrè, hauv 1940 (daim duab 8.2).

Leej twg nrhiav tau astatine?

Nyob rau xyoo 1940, peb tus kws tshuaj hu ua Dale R. Corson, Kenneth R. Mackenzie thiab Emilio Segre ntawm University of California tau pom cov pov thawj rau qhov muaj qhov tsis paub txog qhov kawg. ntawm whilst bombarding ib bismuth isotope nrog alpha hais siv cyclotron.

Dale Carson nrhiav pom astatine li cas?

Astatine yog tsim los ntawm Dale R. Carson, K. R. MacKenzie thiab Emilio Segrè los ntawm bombarding ib qho isotope ntawm bismuth, bismuth-209, nrog alpha hais uas tau ceev ceev hauv ib lub cuab yeejhu ua cyclotron. Qhov no tsim astatine-211 thiab ob lub neutrons dawb.

Lub ntsiab lus twg muaj 85 tus lej atomic?

Astatine: Lub ntsiab ntawm Atomic Number 85.

Dab tsi yog lub ntsiab lus tsawg tshaj plaws hauv ntiaj teb?

Ib pab pawg ntawm cov kws tshawb fawb siv ISOLDE nuclear-physics chaw ntawm CERN tau ntsuas thawj zaug lub npe hu ua electron affinity ntawm cov tshuaj lom neeg astatin, qhov tsis tshua muaj tshwm sim. element on Earth.

Pom zoo: