The unstable isotope nickel 59 can be used to date rocks that contain nickel 59 decays into the more stable cobalt 59 the nickel isotope has a half-life of 76,000 years which statement about nickel 59 is true?
A. After 76,000 years all the nickel 59 in a rock decays in the cobalt 59
B. Nickel 59 can only be used to date rockstar younger than 76,000 years
C. All the nickel 59 stabilizes after he completes 1/2 life. Of 76,000 years
D. The amounts of nickel 59 and cobalt 59 remain the same over a half life period
E. The amounts of nickel 59 in cobalt 59 tell how long ago the rock cool to closure temperature
