chemistry

consider a neutral atom with 30 protons and 34 neutrons. What is the mass number for the atom?

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  1. http://www.ndt-ed.org/EducationResources/HighSchool/Radiography/atomicmassnumber.htm

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  2. 64

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  3. Neutral atom with 30 protons and 34 neutrons. What is the mass numbet for atom

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