dianeb66 dianeb66
  • 12-11-2020
  • Chemistry
contestada

What is the name AND mass number of an atom with 4 protons and 4 neutrons?

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katia51
katia51 katia51
  • 12-11-2020
Be beryllium mass number: 9.012g
*4 protons is the atomic number btw just check your periodic table
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