CasperLynn CasperLynn

26-03-2017
Chemistry

contestada

Which of the following is a radioisotope used to date rock formations older than 50,000 years old?
A) carbon-12
B) uranium-235
C) cobalt-60
D) carbon-14

Any help is appreciated :)

Respuesta :

mariahcarrie mariahcarrie

26-03-2017

I'm not so sure but I would say Answer Choice B

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butterickgattli butterickgattli

24-07-2018

i am pretty sure its uranium 235

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