In 1994 a team of German physicists created an atom of Element 111.If the atom had a mass number of 272,and a neutron was released from the collision of a projectile and a Bi-209 target,what was the projectile?

Question

Quizplus · Accepted Answer

The mass number of the created atom (Element 111) is 272. The target is Bi-209, and a neutron is released, so the projectile must have a mass number of 64 (272 - 209 - 1 = 62). Therefore, the projectile is Ni-64.

In 1994 a Team of German Physicists Created an Atom