A parent isotope labeled A has 5730 half life (years) and its effective range is 100-70,000 (years) PLZ HELP:)

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A parent isotope labeled A has 5730 half life (years) and its effective range is 100-70,000 (years) PLZ HELP:)

[From: ] [author: ] [Date: 12-04-10] [Hit: ]

b.c.d.Doubt theres much of a way other than looking up the half-lives of each of the radioisotopes.You can look in this list for 5700 years and find C-14.http://en.......

ok so there are four choices...:
a.) nitrogen-14
b.)lead- 206
c.)carbon-14
d.)argon-40 THANK YOU SO SO SO MUCH:DDD

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C-14
Doubt there's much of a way other than looking up the half-lives of each of the radioisotopes.
You can look in this list for 5700 years and find C-14.
http://en.wikipedia.org/wiki/List_of_rad…

Or this alphabetical list for each isotope
http://www.iem-inc.com/toolhalf.html

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