When U-238 emits an alpha particle,the nucleus left behind has
A)90 protons.
B)91 protons.
C)92 protons.
D)93 protons.
E)94 protons.

Name: When U-238 emits an alpha particle,the nucleus left behind has A)90 protons. B)91 protons. C)92 protons. D)93 protons. E)94 protons.
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Question

Quizplus · Accepted Answer

When U-238 emits an alpha particle, it loses 2 protons and 2 neutrons. Uranium (U) has 92 protons, so after emitting an alpha particle, the nucleus left behind will have 90 protons.

When U-238 Emits an Alpha Particle,the Nucleus Left Behind Has