32
22
Select the correct answer.
The unstable isotope nickel-59 can be used to date rocks that contain it. Nickel-59 d
life of 76,000 years. Which statement about nickel-59 is true?
O A.
Ов.
0 с.
OD.
After 76,000 years, all the nickel-59 in a rock decays into cobalt-59.
Nickel-59 can only be used to date rocks that are younger than 76,000
All the nickel-59 stabilizes after it completes one half-life period of 76,C
The amounts of nickel-59 and cobalt-59 remain the same over a half-li
○ E. The amounts of nickel-59 and cobalt-59 tell how long ago the rock coc