Does a nucleus designated as 40 18X contain (a) 20
Chapter 44, Problem 7(choose chapter or problem)
Does a nucleus designated as 40 18X contain (a) 20 neutrons and 20 protons, (b) 22 protons and 18 neutrons, (c) 18 protons and 22 neutrons, (d) 18 protons and 40 neutrons, or (e) 40 protons and 18 neutrons?
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