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November 26, 2014

Homework Help: chemistry

Posted by michelle on Tuesday, December 4, 2012 at 4:33pm.

A magic number is the name given to certain numbers of protons or neutrons that have a high correlation to stability in nuclei.

Magic # of protons: 2,8,20,28,50,82
Magic # of neutrons: 2,8,20,38,50,82,126, 184

Using general trends, predict the stability of the following nuclei.
Either STABLE or RADIOACTIVE

A)arsenic-82
B)calcium-40
C)radium-233
D)potassium-44
E)zinc-64

(I figured B would be stable because it falls under the magic numbers list. Also I think C would be radioactive because it does not seem to fit with the others)

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