Chem Test 2
Terms
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- periodic law
- physical and chemical properties of the elements are periodic functions of their atomic numbers
- pauli exclusion principle
- no two electrons can have the same four quantum numbers, so must have opposite spins
- ionization energy
- energy needed to remove an electron from a neutral atom
- non polar covalent bond
- electrons shared equally
- electron affinity
- energy change that occurs when an electron is acquired by a neutral atom
- quantum theory
- when an excited electron falls, its emitted energy is equal to the difference between the atoms initial state and final state
- aufbau principle
- electrons fill lowest energy orbital that will accept them
- chemical bond
- mutual attraction between nuclei and valence electrons of different atoms that bind together
- rutherford
- discovered that light had wave and particle properties
- photoelectric effect
- emission of electrons from a metal when light shines on it
- polar covalent bond
- electrons shared unequally
- quantum
- miminum amount of energy that can be gained or lost by an atom
- hund's rule
- electrons will spread out within same energy level if possible
- orbital
- 3d region around nucleus with probable location of an electron
- visible light
- energy that has wave like pattern as it travels through space
- electronegativity
- measure of ability of an atom to attract electrons
- atomic radii
- 1/2 distance of nuclei of identical atoms bonded together