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This quick reference guide covers essential information from the periodic table. It highlights the atomic symbol of oxygen as O, the atomic number of calcium (Ca) as 20, and the total electrons in a sodium atom (Na) as 11. Additionally, it provides the atomic weight of helium (He) at 4 amu, the number of protons in carbon (C) as 6, the neutrons in a neon (Ne) nucleus as 10, and the outer shell electrons in nitrogen (N) as 5. Ideal for students or anyone needing a fast overview.
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The Periodic Table: A Quick Review What is the atomic symbol of oxygen? • O What is the atomic number of calcium (Ca)? • 20 How many total electrons does a sodium atom (Na) have? • 11 What is the atomic weight of a helium atom (He)? • 4 amu How many protons does an atom of carbon (C) have? • 6 How many neutrons are in the nucleus of a neon (Ne) atom? • 10 How many electron are in the outer shell of nitrogen (N)? • 5