[DOC] [TLE] Plutonium - Wikipedia [PAR] Plutonium is a transuranic radioactive chemical element with symbol Pu and 
atomic number 94. ... Both plutonium-239 and plutonium-241 are fissile, meaning 
that they can .... and alpha emission, mostly forming uranium (92 protons) and 
neptunium (93 .... The energy difference between the 6d and 5f subshells is very 
low. [DOC] [TLE] Alpha decay - Wikipedia [PAR] Alpha decay or -decay is a type of radioactive decay in which an atomic nucleus 
emits an ... Like other cluster decays, alpha decay is fundamentally a quantum 
tunneling process. ... Computing the total disintegration energy given by the 
equation: ... uranium-232 shows that alpha particle emission would need only 5.4 
MeV,... [DOC] [TLE] Uranium - Wikipedia [PAR] Uranium is a chemical element with symbol U and atomic number 92. It is a 
silvery-white metal ... Depleted uranium (238U) is used in kinetic energy 
penetrators and armor .... Two fuzzy black features on a fuzzy white paper-like 
background. ... produces the emission of beta rays (electrons or positrons from 
the elements... [DOC] [TLE] Glossary - World Nuclear Association [PAR] They are therefore significant in wastes arising from nuclear fission, e.g. ... 
CANDU: CANadian Deuterium Uranium reactor, moderated and cooled by ... 
particles are emitted (usually with gamma rays), making it a different element. .... 
Radiation: The emission and propagation of energy by means of electromagnetic 
waves or... [DOC] [TLE] actinide series facts, information, pictures | Encyclopedia.com ... [PAR] These 10 are classified, along with the nine elements to the right of actinium on 
Period ... they are usually considered separatelyrather like grown children who 
have ... of decay brought about by the emission of high-energy particles, or 
radiation. .... uranium, while the second contained the transuranium element 
plutonium. [DOC] [TLE] RADIATION BASICS - NIRS [PAR] Ionizing radiation includes not only energy waves but particles as well. ... A few 
radioactive elements, like uranium, radium, and thorium, occur in nature. ... They 
are a fraction of the size of alpha particles, can travel farther and are more 
penetrating. ... Strontium-90 and tritium are two beta-emitting radionuclides 
routinely... [DOC] [TLE] Nuclear Energy - The Theory - Electropaedia [PAR] Nuclear Energy Theory. ... Plutonium-239 however is fissile, more readily so than 
Uranium-235 emitting more excess neutrons per fission than Uranium-235 so... [DOC] [TLE] List the Three Types of Radiation Given Off During Radioactive ... [PAR] Of the three main types of radiation given off during radioactive decay, two are ... 
Radioactive elements emit radiation as particles and rays of energy. ... An atom 
that gives off radiation has an unstable nucleus; in many cases this means it has 
... For example, uranium-238 emits an alpha particle and becomes thorium-234. [DOC] [TLE] Radioactivity - ANSTO [PAR] 'Radiation' is energy that travels as waves or particles. ... Some elements reach 
stability via a series of steps through several isotopes, ... In beta decay, a particle 
is emitted from the nucleus of an atom. ... The word fission means to split apart. ... 
fuel is almost pure uranium-235 or plutonium, you could have an atomic bomb. [DOC] [TLE] Nuclear Radiation and its Biological Effects, PART I, "No Immediate ... [PAR] Radiation the emission and propagation of energy through space or tissue in the 
... These chemicals include uranium, radon, potassium and other trace elements. 
.... Alpha particles can be stopped by human skin, but they may damage the skin 
in .... Most Geiger counters cannot detect alpha particle emitters like plutonium. [DOC] [TLE] Glossary - Canadian Nuclear Association [PAR] Alpha particle: A positively charged particle emitted from the nucleus of an atom 
during radioactive decay. ... Atomic energy: Another term for nuclear energy. .... 
substances by chemical means; for each element, there are several isotopes that 
all ... Fertile: An isotope (such as uranium-238 or plutonium-240) that is capable 
of... [DOC] [TLE] 2. principles of ionizing radiation - Agency for Toxic Substances and ... [PAR] energy to remove electrons from the atoms in the tissues that they penetrate (
Borek 1993). ... In radiation

Question: Elements like uranium & plutonium are classified as this, meaning they emit rays or waves of energy
Answer: Radioactive