Atoms are the building blocks of matter. They make up many elements that are common among living things.
The atom depicted in the picture is beryllium according to the Periodic Table. It is beryllium because in the top right hand corner of the beryllium box in the Periodic Table there is the number two, and below it, another two. This represents the inner energy level of electrons and the outer, or valence electrons. I knew that the model atom was beryllium because it has four electrons circling its nucleus and that two of those belonged to the inner energy level, which holds two electrons, and the other two electrons fit into the second level. The first energy level has two electrons because that is what makes it the most stable. These are the four electrons shown in the table. Also, I know that the number of electrons generally equals the number of protons in an atom and that the atomic number is four in beryllium, according to the Periodic Table. The atomic number is the number of protons in an atom, and since the number of protons is equal to electrons, the number of electrons is four. The model has four electrons and beryllium is the only element in the whole Periodic Table of Elements that has an atomic number of four electrons: two in the innermost level and two in the valence. Atoms are amazing pieces of life that must people do not take time to notice. They are everywhere, all around us.