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.
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.
The atomic number of beryllium (Be) is 4 and the atomic mass is 9 for the most stable isotope. Be-9 isotope has 5 neutrons (9 - 4 = 5).Beryllium's stable isotope (Be-9) has 5 neutrons. There are about 11 other isotopes known, Be-7 and -10 the next most common and have 3 and 6 neutrons respectively but only exist in nature in trace amounts.
There are too many electrons. This would be a negative ion of lithium-6 (stable but less common isotope) that does not occur naturally. The element with 3 electrons, 3 protons, and *4 neutrons* is lithium-7, the most common isotope. It forms a stable positive ion (2 electrons).
18 protons 18 electrons 22 neutrons
A neutral beryllium atom has four neutrons. This is because beryllium's atomic number is 4, which means it has 4 protons in its nucleus, and since it is neutral it also has 4 electrons to balance the charge.
4 protons, 4 electrons and 5 neutrons
4 protons 4 electrons 5 neutrons
Beryllium has 4 protons, 5 neutrons and 4 electrons.
Beryllium-10 has 4 protons and 4 electrons. Since the atomic number of beryllium is 4, this is how many protons and electrons it has. Beryllium-10 is an isotope, which means it has 6 neutrons, as the total mass number of beryllium-10 is 10.
Beryllium has 4 protons, 4 electrons and 5 neutrons (in its most stable isotope)
There are 5 neutrons, 4 protons and 6 electrons.
There are 5 neutrons in beryllium 4 electrons and 4 protons.
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.
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.
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.
Beryllium has 4 particles, consisting of 4 protons and 4 neutrons in its nucleus, surrounded by 4 electrons.
The atomic/proton no. of beryllium is 3. Thus the number of protons is 3.