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19 Cards in this Set

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a form of energy that exhibits wave-like behaivor as it travels through space
electromagnetic radiation
the distance between corresponding parts on adjacent waves
(crest to crest)
wavelength
the number of waves that pass a given point in a specific amount of time
frequency
a form of energy that exhibits wave like behavior as it travels through space
electromagnetic radiation
numbers that soecify the properties of atomic orbitals and of their electrons
quantum numbers
symbolized by n, indicates the main energy level occupied by the electron
principle quantuum number
symbolized by l, indicates the shape of an orbital
orbital quantum number
symbolized by m, indicates the orientation of an orbital
s, p, d, f
magnetic quantum number
symbolized by s, has only two possible values, +1/2, -1/2, which indicates two possible spin states of an electron in an orbital
spin quantum number
this model pictures atoms as tiny, indestructible particles, with no internal structure
dalton's model
this model pictures electrons embedded in a sphere of positive electrical charge
thomson's model
this model finds that an atom has a small, dense positively charged nucleus.
electrons move around the nucleus
failed to explain why elements glowed different colors when excited and rhe chemical properties of elements
rutherford's model
in this model, the electron moves in a circular orbit at fixed distances from the nucleus
model fell apart for larger atoms
bohr's model
posed that electrons can behave like a particle and a wave
de broglie
quantum mechanical model
worked for larger atoms
places electrons in an orbital
schrodinger
states that it is impossible to state both the position and velocity of an electron
heisenburgs uncertainty principle
states that an electron occupies the lowest energy orbital that can recieve it
aufbau principle
states the orbitals of equal energy are each occupied by one electron before any is occupied by a second electron
hund's rule
states that no two electrons in the same atom can have the same four quantum numbers
pauli exclusion principle