January 23, 2006: American troops in Iraq have run across chemical artillery shells on quite a number of occasions. There've never been more than a handful found in any particular cache, and all of ...

MOSCOW, November 24. /TASS/. Extremist armed groups fired shells loaded with chlorine in Aleppo on Saturday, the SANA agency reported citing a source in the police department. According to the ...

Let’s take chlorine as an example. It is positioned in group 7 of the periodic table because it has seven electrons in the outermost shell of electrons. The trouble is that chlorine almost never ...