The atomic number of an atom tells you how many protons that atom has. Beryllium's atomic number is 4. That means that, regardless of how many neutrons a given isotope of beryllium may have, it will always have 4 protons.
Beryllium has 4 protons
Beryllium has 4 protons. Since protons are paired in pairs of 2 within the nucleus, there are no unpaired protons in beryllium.
beryllium has 4 protons. helium has 2 protons
Beryllium-10 has 4 protons.
beryllium has 4 protons and helium has 2 protons
Beryllium has 4 protons.
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Beryllium has four protons.
4 protons.
There are four protons in the nucleus of a beryllium atom.
The atomic/proton no. of beryllium is 3. Thus the number of protons is 3.
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.