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17 terms

Chapter 5

STUDY
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Bohr Model of the Atom
Electrons occupy circular orbits which represent quantum energy levlels
Quantum Mechanical Model (Schrodinger)
Utilizes an electron cloud which represents where the electron would be 90% of the time
Atomic Orbital
A region of space where there is a high probability of finding an electron.
n = what?
energy levels
s, p, d and f equal what?
energy sublevels
Aufbau Principle
electrons occupy the orbitals of lowest energy levels first
Pauli Exclusion Principle
2 electrons per orbital; must have opposite spin
Hund's Rule
1 electron per orbital until all orbitals of equal energy are filled
shorter wavelength =
higher frequency = higher energy
higher frequency = higher energy =
shorter wavelength
EM spectrum from long to short
radio - micro - infrared - visible light - ultraviolet - x-rays - gamma rays
What is true about atomic spectra
No two elements have the same emission spectrum!
ground state
the electron has its lowest possible energy
excited state
an electron moves to a higher energy level by absorbing a certain quantum of energy
light transmission
occurs when the electron drops back down to a lower energy level; this light is proportional to the energy change of the electron
classical mechanics
the physics of describing the motions of bodies larger than atoms
quantum mechanics
describes the motions of subatomic particles