[DOC] [TLE] Radon - Wikipedia [PAR] Radon is a chemical element with symbol Rn and atomic number 86. It is a 
radioactive, colorless, odorless, tasteless noble gas, occurring naturally as a 
decay... [DOC] [TLE] Radium - Wikipedia [PAR] Radium is a chemical element with symbol Ra and atomic number 88. It is the 
sixth element in .... Its immediate decay product is the dense radioactive noble 
gas radon, which is responsible for much of the ... They separated out an element 
similar to bismuth from pitchblende in July 1898, that turned out to be polonium. [DOC] [TLE] The Process of Natural Radioactive Decay - dummies [PAR] Certain naturally occurring radioactive isotopes are unstable: Their nucleus 
breaks ... All elements with 84 or more protons are unstable; they eventually 
undergo decay. ... Here, Radon-222 undergoes nuclear decay with the release of 
an alpha particle. ... Here, the Iodine-131 gives off a beta particle (an electron), 
leaving an... [DOC] [TLE] Radon - Element information, properties and uses | Periodic Table [PAR] Element Radon (Rn), Group 18, Atomic Number 86, p-block, Mass [222]. Sources
, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images. ... 
is derived from radium, as it was first detected as an emission from radium during 
radioactive decay. ... State at 20C, Gas, Key isotopes, 211Rn, 220Rn, 222Rn. [DOC] [TLE] June 28, 2008 [PAR] ... as the Sahara's northern boundary Mediterranean As you'd expect, radon gas 
is collected out of the radioactive decay of this element, symbol Ra Radium This... [DOC] [TLE] Full text of "The Nucleus, Project Physics Text and Handbook ... [PAR] Introduc- tion to the detection of nuclear particles in a bubble chamber. ..... 21.1 
Becquerel's discovery 5 21.2 Other radioactive elements are discovered 8 ..... A 
small amount of the gas collected in this way was found to be a strong or .... For 
example, if we use the symbols Ra and Rn to represent atoms of radium and 
radon,... [DOC] [TLE] Modern 2 nuclear - Tamalpais Union High School District [PAR] Nuclear symbols identify both the element and ... freedom. You'd have .... 
radioactive atom gives off nuclear radiation is done .... illustrate the three most 
common radioactive decay ..... would expect 600,000 of those residents to die 
from ..... radioactive radon gas, which was absorbed by the ...... 238U collecting 
closer to the. [DOC] [TLE] i need help solving this. Can you guys show me how it's [PAR] Radium-226 decays by alpha emission to radon-222, a noble gas. ... Chemistry 
The half life of radon 222 is 3.82 days. If the initial mass of a ... A 10-gm source of 
radium is sealed, and the radon produced is pumped off every 24 ... how to write 
a nuclear equation for the nuclear decay of Ra-226 to an isotope of radon-222 [DOC] [TLE] Chapter 12 - Scribd [PAR] All rocks contain a trace of radioactive isotopes, notably those of uranium. .... 
Each element has a fixed number of protons, but the number of neutrons may 
vary .... Table 1 2-1 Types of Radioactive Decay Type of Decay alpha beta 
gamma Particle ... followed by the acquisition of two electrons to form an atom of 
helium gas. [DOC] [TLE] Basic Physics of Nuclear Medicine/Print version - Wikibooks, open ... [PAR] where X is the chemical symbol of the element; A is the "Mass Number," (
protons+ ... For example, you should now be able to figure out that the uranium 
isotope, 92 236 .... A hypothetical nucleus which can undergo many forms of 
radioactive decay. ...... For example 221Ra emits an alpha-particle with an 
energy of 6.71 MeV. [DOC] [TLE] Strange Bacteria Sustains Itself Without Sunlight - Slashdot [PAR] Oct 20, 2006 ... Check out the new SourceForge HTML5 internet speed test! ... The colony does it 
by relying on radioactive uranium to split water into hydrogen gas. ..... or as a 
decay product of the radioactive decay of a heavier element ... It just can't 
explode that way, so at most you'd get a black

Question: As you'd expect, radon gas is collected out of the radioactive decay of this element, symbol Ra
Answer: radium