The most important isotope of beryllium - 9Be - has 5 neutrons. The neutral atom of beryllium has 4 electrons.
4 protons, 4 electrons and 5 neutrons
There are 5 neutrons, 4 protons and 6 electrons.
4 protons 4 electrons 5 neutrons
Beryllium-10: protons:4 electrons:4 neutrons:6 atomic #:4 Mass #: 10
There are 5 neutrons in beryllium 4 electrons and 4 protons.
Beryllium has 4 protons, 5 neutrons and 4 electrons.
Beryllium 9 has 5 electrons.
Beryllium has 4 protons, 4 electrons and 5 neutrons (in its most stable isotope)
Beryllium has 4 protons and normally 4 neutrons in its nucleus. It usually has 4 electrons orbiting that nucleus, but this number can change depending on its level of ionisation.
One beryllium atom has four (4) electrons, four (4) protons, and three (3), five (5) or six (6) neutrons, depending on the isotope being considered. The only stable isotope is Beryllium-9 (with 5 neutrons) but beryllium-10 (with 6 neutrons) has a relatively long half-life of 1.51 million years.
Beryllium's atomic number is 4. To remain neutral, it must have 4 protons and 4 electrons. Beryllium's only stable isotope is 9Be, meaning it has 9 - 4 = 5 neutrons.
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.