Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425



Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425
Textbook Problem

. During the research that led to production of the two atomic bombs used against Japan in World War II, different mechanisms for obtaining a supercritical mass of fissionable material were investigated. In one type of bomb, what is essentially a gun was used to shoot one piece of fissionable material into a cavity containing another piece of fissionable material. In the second type of bomb, the fissionable material was surrounded with a high explosive that, when detonated, compressed the fissionable material into a smaller volume. Discuss what is meant by critical mass, and explain why the ability to achieve a critical mass is essential to sustaining a nuclear reaction.

Interpretation Introduction


Interpret critical mass and its requirement for the process of reaction.

Concept Introduction:

The atom consist nucleus and the electron. The nucleus of an atom consist proton and neutron and the electron is revolving around the nucleus. Mass number of an atom is equal to the sum of proton and neutron. Atomic number is equal to the number of proton or in ground state it is also equal to the number of electron.


Critical mass is the minimum mass of the reactant or nuclide required for its reaction for fission. A reactant is needed in critical amount such as limiting reagent so to proceed the reaction to get the yield of product...

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