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Chapter 4 Periodic T

Chapter 4 of chemistry live

TermDefinition
Element A substance that cannot be spilt into simpler substances chamically
Triad A group of 3 elements with similar chemical properties. the atomic weight of 1 is almost equal to the average of other 2
Newlands' Octaves A group elements arranged in order of atomic weight. the 1st and 8th have similar properties
Mendeleev's Periodic Law The elements are arranged in increasing atomic weight.The properties vary periodically.
Atomic Number The number of protons in the nucleus of an atom
Atomic Mass Number The amount of protons and neutrons in an atom
Isotopes Variations of atoms with the same atomic number but different mass number.
Aubfau Priciple When building electronic configurations, the electron will occupy the lowest energy level
Hunds Rule of Maximum Multiplicity When 2 or more orbitals of equal energy are available, electrons will fill in singly before in pairs.
Pauli Exclusion Principle No more then 2 electrons can fill an orbital and they must have opposite spin.
Created by: MarkA0845
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