- radium. - radium. have you heard of raum, ga? l ght, rium, all right. ok. let's suppose it does not emit an alpha particle. it can emit a beta particle. if it emits a beta particle. beta particle, beta particle, beta--what's a beta particle? - electron. - electron. now we have to make the symbol for electron. for electron, get it? mm-hmm. at'she atomic nuer of an ectron? - negative one. - atom nber? negave one at is atomic numr, anyway? charge, right? what's the charge of aelectr? - negative one. - negave one what's theass of an electron? zero. well, it's closer to zero than it is to one if one is e mass of a proton or neutron. and this has got, like, out 2,000th the mass. that's closer to zero than to one. so we round off atomic mass number, anyway. this is ze. now, what does the thorium become? ll, what do we got over here for an atomic number? 91 do you see it's 91? yeah. 91. and what's the mass gonna be? - 89. - now, what has 91? protactinium. - is it gonna be 91, gang? - yeah. let's check. - 91 minus 1 equals 90. - correct. it's 91. that's interesting.

smaller deadly explosives when fired powerful bunker buster bombs were also dropped on baghdad you radium depleted uranium in empty tank shells was also used by the u.s. troops. while traces of white phosphorus was also find in iraq. now the palm like bombs were dropped on fallujah in november of two thousand and four it burns and knelt down and flesh on contact while i labeled those causes a slow death delta omagh by sea says that the us use of these weapons has led to civil left-wing impact. it's clear that though the us spoke of their help provided to iraq after the invasion notably reconstruction education and investments their so-called help resulted in the use of weapons banned by article fifty three of the geneva convention it prohibits any kind of weapon which if used where there is war can affect the area's environment climate and water resources things that occurred in one nine hundred ninety one and then in two thousand and three are true catastrophe all types of munitions were used including dispenser weapons boss present munitions depleted uranium and chemical weapons all the

initially, there was a three-mile radium set up of a no-fly zone in the event of a potential second explosion. in addition to making sure that the injured are tended to, officials were going door-to-door to ensure that if there was anyone who was trapped or needed assistance, they were provided that. an eyewitness who lives in that community, reported that she received a text message from someone in triage in a those searches were over. that's one source on the ground. nbc has not officially confirmed that. we have heard from other hospitals in the area that they are treating burn victims, which, of course, would be consistent with the nature of this explosion. now, officials are, of course, monitoring this vision. governor rick perry issued a statement earlier saying they have mobilized state resources to help local authorities. a white house official says the obama administration has been briefed on the situation. they continue monitoring local and state response through the federal emergency management agency. in addition to tending to those who have been injured, officials are concerned a