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What is the Atomic Number of a neutral atom that has 5 neutrons and 4 electrons
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What is the Atomic Number of a neutral atom that has 5 neutrons and 4 electrons

User Lorenzo Ang
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Since it has 4 protons, it must have an atomic number of 4. (That makes it beryllium.)
Since it has a 4 protons and 5 neutrons, it has a mass number of 9.
User Sissonb
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