Nuclear Chemistry. Bravo – 15,000 kilotons. Nuclear Symbols. Mass number (p + + n o ). Element symbol. Atomic number (number of p + ). Types of Radioactive Decay. 2+. alpha production ( a ): helium nucleus beta production ( b ): neutron splits into an electron and a proton.
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Bravo – 15,000 kilotons
(p+ + no)
(number of p+)
238U 4He + 234Th
92 2 90
234Th + 234Pa 0e
90 91 -1
Limited to VERY large nucleii.
Converts a neutron into a proton.
Opposite charges_________ each other.
Like charges_________ each other.
Decay will occur in such a way as to return a nucleus to the band (line) of stability.
6 -1 7
A radioactive nucleus reaches a stable state by a series of steps
Nuclear changes occur with small but measurable losses of mass. The lost mass is called the mass defect, and is converted to energy according to Einstein’s equation:
DE = Dmc2
Dm = mass defect
DE = change in energy
c = speed of light
Because c2 is so large, even small amounts of mass are converted to enormous amount of energy.
A self-sustaining fission process is called a chain reaction.