2 103 Elements!?!How can we possibly keep track of 103 elements and all of their propertiesIn 1867 Dmitri Mendeleev created cards with the properties of all the know elementsHe then organized them based on similar properties until he found a pattern. This became the periodic table.As more elements were discovered and made they were added to the periodic table until we had all 103 elements put in order
4 What Is On The Periodic Table? Each element is listed with its Name, symbol, atomic number, atomic mass and ion chargeAtomic number is the number of protons in the nucleus of each atom of an elementAtomic Mass is the mass of the atom measured in Atomic Mass UnitsIon Charge is the electric charge formed when an atom gains or loses electrons
5 Information on the Table -2SSulphur32.1Ion ChargeAtomic NumberSymbolNameAtomic Mass
6 So How Many Particles Are There? The number of protons is equal to the atomic number. This is also the number of electronsThe number to Neutrons is equal to the atomic mass (rounded to the nearest whole number) minus the number of protons ex Cholrine: Atomic Number = 19Atomic Mass = 35.5Number of Neutrons = 36 – 19 = 17
Your consent to our cookies if you continue to use this website.