52_100_Lecture_4_F07

52_100_Lecture_4_F07 - 9/5/2007 Predicting Product of...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
9/5/2007 1 Predicting Product of Nuclear Decay 85 36 Kr ? + 0 -1 e 222 4 86 ? 2 H e+ Rn 239 92 U ? + 0 -1 e 11 5 B 7 3 Li + ? 1 ? 140 56 Ba + 0 -1 e Predicting Stability If the ratio of an isotopes neutrons to its protons is approximately 1.5 : 1 or less, then the isotope is stable Isotope Neutrons Protons Ratio Stable? 01 0 : 1 Y e s 11 1 : 1 Y e s 2 1 2:1 No 1 1 H 2 1 H 3 1 H 2
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
9/5/2007 2 Nuclear Fission Nuclear Fission: the splitting of an atomic nucleus into two or more large fragments Berlin, 1938, nuclear fission is discovered in the laboratory of Otto Hahn Bombarded uranium with neutrons to produce an isotope of barium and no alpha or beta particles Large amount of energy was also released 235 92 U + 140 56 Ba + 1 0 n 96 36 Kr Nuclear Fission Both Germans and Americans realized that a large amount of fissionable material could create an enormous explosion Uranium-235 ( U-235 ), ~ 1 % of natural uranium, was the most efficient fissionable isotope. 235 92 U + 140 56 Ba + 1 0 n 93 36 Kr + 3 1 0 n 4
Background image of page 2
9/5/2007 3 Chain Reaction Chain Reaction: continuing series of nuclear fission that occur when
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 5

52_100_Lecture_4_F07 - 9/5/2007 Predicting Product of...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online