Author Question: Which has the greater half-life? A) Oxygen-19 B) Cobalt-60 C) Uranium-238 D) Strontium-90 E) ... (Read 94 times)

oliviahorn72 · **on:** Jul 27, 2018

Which has the greater half-life?

A) Oxygen-19
B) Cobalt-60
C) Uranium-238
D) Strontium-90
E) Hydrogen-3

Question 2

241Am decays by alpha particle emission. The daughter isotope in this case is (the atomic numbers of Np, Pu, Am, Cm, and Bk are 91, 92, 93, 94, and 95 respectively)

A) 239Np.
B) 237Np.
C) 245Bk.
D) 235Bk.
E) not given.