4 neutrons and a metal

- 4 neutrons and metallic
- 4 neutrons metallic who am i
- 4 neutrons metallic 1 valence electron
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- 4 neutrons metallic 27 electrons
- 4 neutrons metallic group 1
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- 4 neutrons metals
- 4 neutrons metallic periodic table
- What element has 4 neutrons and is a metal