Atom, Bohr-Rutherford, and the Periodic Table

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Presentation transcript:

Atom, Bohr-Rutherford, and the Periodic Table Atomic Structure Atom, Bohr-Rutherford, and the Periodic Table

A New Order Atomic Number – how many protons and electrons there are in an atom Mass Number – total number of protons and neutrons. Atomic Mass Units – atomic mass does appear on the periodic table and is measured in u. Not measured on a balance, it is how they are relative to each other A proton is about 1u, a neutron is about 1u and an electron is 1/1837 in relation to protons and neutrons

Looking Forward Atomic number Helps to define arrangement of periodic table Relates to chemical properties of elements Relates to arrangement of electrons Group 1 – how many electrons are in outer (valence) shell?