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Energy Level An energy level is defined as the fixed energy value that an elecron in a atom may have
An Orbital An orbital is an region in space within which there is a high probability of finding an electon
An Element An Element is a substance that cannot be split up into simpler substances by chemical means
A Triad A triad is a group of 3 elements with similar chemical properties in which the atomic weight of the middle element is approximately equal to the average of the other two
Newlands Octaves Newlands Octaves are groups of elements arranged in order of increasing atomic weight within which the first and eight element of each group have similar chemical properties
Mendeleev's Periodic Law Mendeleev's Periodic Law states that when elements are arranged in order of increasing atomic weigh the properties of the elements vary periodically
Atomic Number Atomic Number of an atom is the number of protons in the nucleus of that atom
Modern Periodic Table Modern Periodic Table is an arrangement of the elements in order of increasing atomic number
When Elements Are Arranged ... When Elements Are Arranged in order of increasing atomic number the properties of the elements vary periodically
Mass Number Mass Number of an element refers to the number of protons and neutrons in the nucleus of an atom of that element
Isotopes Isotopes are atoms of the same element (i.e. they have the same atomic number)that have different mass numbers due to a different number of neutrons in the nucleus
Relative Atomic Mass Relative Atomic Mass is defined by: -The avarage of the mass number of the isotopes of that element -as they occur naturally -taking their abundances into account -Expressed on a scale in which the atoms of the Carbon 12 isotope have a mass of exactly
Aufbau Principal Aufbau Principal states that when building up electronic configuration of an atom is its ground state,the electrons occupy the lowest available energy level
Hund's Rule of Maximum Multiplicity Hund's Rule of Maximum Multiplicity states that when two or more orbitals of equal energy are available the electrons occupy them singly before filling them in pairs
The Pauli Exclusion Project The Pauli Exclusion Project states that no more than 2 electrons can occupy an orbital and they must have opposite spin
Created by: MelissaFitzell