The first is a nuclear decay reaction, the second a chemical decomposition reaction, the third a nuclear bombardment reaction an the fourth a chemical combination reaction. The first one is correct.
http://answers.yahoo.com/question/index?qid=20100116081...
The weak force is the one that allows a quark to turn into a different flavor of quark, thus allowing a neutron to transform into a proton, or a proton to transform into a neutron. In the case of the neutron, one of its down quarks change t...
http://wiki.answers.com/Q/How_weak_nuclear_force_is_inv...
Here’s an interesting conundrum involving nuclear decay rates. We think that the decay rates of elements are constant regardless of the ambient conditions (except in a few special cases where beta decay can be influenced by powerful electri...
http://freerepublic.com/tag/science/index?more=6276993
Wouldn’t you think that the decay rates of isotopes found on Earth would remain fairly constant under controlled conditions? Statistically-speaking one would be able to make a pretty good prediction about a radioactive element’s decay rate...
http://digg.com/space/Could_Nuclear_Decay_Rates_be_Infl...
A recent piece in the Wall Street Journal raises this very question, and not a minute too soon. Unfortunately, Secretary Gates’ October 28 speech at the Carnegie Endowment, “Nuclear Weapons and Deterrence in the 21st Century” did not conv...
http://blog.nationalsecurity.org/2008/12/
Radioactive decay is gradual reduction in the number of radioactive atoms in material. ChaCha!
http://www.chacha.com/question/what-is-the-definition-o...
nucleus spontaneously breaks down, often letting off harmful particles of radiation
http://answers.yahoo.com/question/index?qid=20081029223...