In a Certain $\gamma$ Decay Process, an Excited Neon Atom Emits A

question 26

Multiple Choice

In a certain $\gamma$ decay process, an excited neon atom emits a $\gamma$ -ray that has an energy of 1.630 MeV. The neon atom in the ground state has a mass of 19.992 435 u. What is the mass of the excited neon atom?

• A)17.498 658 u
• B)18.746 422 u
• C)19.994 185 u
• D)19.999 685 u
• E)20.003 185 u

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