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The isotope of Beryllium, 8Be. It is very rare and very unstable: with a half life of 7*10-17 seconds (70 quintillionth of a second!).

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Q: What has 4 electrons 4 neutrons and 4 protons?
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How many protons neutrons electrons do Beryllium have?

4 protons, 4 electrons and 5 neutrons


How many protons neutrons and electrons are in 10 Be?

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Protons neutrons electrons for lithium?

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All beryllium atoms have 4 protons and 4 electrons. The number of neutrons is characteristic of a particular isotope, not of beryllium as a whole, and may be determined by subtracting 4, the number of protons, from the mass number of the isotope.


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A lithium atom typically has 3 protons, 4 neutrons, and 3 electrons.


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