Because that is the number of protons in its nucleus. This is also equal to the number of electrons in its orbits.
The atomic number for beryllium is 4.
The atomic number of Beryllium is 4.
Beryllium Atomic number: 4 Atomic Mass: 9.012
The atomic number of beryllium (Be) is 4. The atomic weight of Be is 9.012182 grams per mole.See the Web Links to the left of this answer for a periodic table with more information about this element!
Beryllium has an atomic number of 4, which indicates the number of protons in its nucleus. Its atomic mass of 9 includes the total number of protons and neutrons in its nucleus. This means that beryllium has 4 protons and usually 5 neutrons.
The atomic number of Beryllium is 4.
The atomic number of Beryllium is 4.
The atomic number of beryllium is 4.
The atomic number of beryllium is 4. Be is a monoatomic metal.
Beryllium for it has a Atomic Number of 4.
Beryllium
A neutral atom of Beryllium has 4 electrons. (Its atomic number is 4)
The atomic number of Beryllium is four, which is also the number of protons.
Beryllium (Be) has the (weighted) atomic mass of 9.0121831 grams. The atomic number is 4.
Beryllium ( Be)
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 is an alkaline earth metal. It has an atomic number of 4. By looking at this spot on the periodic table, one finds that beryllium has the atomic symbol Be.