Tutorial:Basic Chemistry Topics: Difference between revisions
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[[Image:Periodic Table (oxygen).png| thumb | left | 250px ]] | [[Image:Periodic Table (oxygen).png| thumb | left | 250px ]] | ||
The image above displays Oxygen (O) in its periodic box. The atomic number of oxygen is 8, centered above the single-letter abbreviation of Oxygen. “8” represents the number of protons in the atom’s nucleus. The atomic number is also used to arrange elements in the periodic table. Notice the increasing value of protons in the atoms from left to right. The atomic mass of an element is centered under the single-letter abbreviation of an atom and represents the total weight of the atom. In this case, oxygen has an atomic mass of ~16. The total weight of an atom is the sum of the atoms protons, neutrons and electrons. | The image above displays Oxygen (O) in its periodic box. The atomic number of oxygen is 8, centered above the single-letter abbreviation of Oxygen. “8” represents the number of protons in the atom’s nucleus. The atomic number is also used to arrange elements in the periodic table. Notice the increasing value of protons in the atoms from left to right. The atomic mass of an element is centered under the single-letter abbreviation of an atom and represents the total weight of the atom. In this case, oxygen has an atomic mass of ~16. The total weight of an atom is the sum of the atoms protons, neutrons and electrons. | ||
