Flashcards in Chap 7 vocab Deck (39)
Oscillating, perpendicular electric and magnetic fields moving simultaneously through space as waves manifested as visble light, x-rays, microwaves, radio waves ect
The number of cycles a waave undergoes per second. rated to s^-1. also Hz
Speed of Light (c)
A fundamental constant giving the speed at which electromagnetic radiation travels in a vacuum
the height of the crest of a wave; related to the intensity of the energy.
the continuum of wavelengths of radiant energy.
The region of the electromagnetic spectrum between the microwave and visible regions.
Radiation in the region of the electromagnetic spectrum between the visible and x-ray regions
A phenomenon in which a wave changes its speed and therefore its direction as it passes through a phase boundary into a different medium
The phenomenon in which a wave striking the edge of an object bends around it.
A number that specifies a property of an orbital or an electron
Planck's constant (h)
A proportionality constant relating the energy and frequency of a photon, equal to 6.626x10^-34J(s)
A packet of energy equal to hv. The smallest quantity of energy that can be emitted or absorbed
The observation that when monochromatic light of sufficient frequency shines on a meta, an electric current is produced
A quantum of electromagnetic radiation
A series of separated lines of different colors representing photons whose wavelengths are characteristic of an element
On of the allowable energy levels of the atom in which it does not release or absorb energy.
The electron configuration of an atom or ion that is lowest in energy
Any electron configuration of an atom or molecule other than the lowest energy state
Any instrumental technique that uses a portion of the electromagnetic spectrum to measure the atomic and molecular energy levels of a substance
The line spectrum produced when excited atoms return to lower energy levels and emit photons characteristic of the element
The spectrum produced when atoms absorb specific wavelengths of incoming light and become excited from lower to higher energy levels
de Broglie wavelength
The wavelength of a moving particle obtained from the de Broglie equation
The principle stating that both matter and energy have wavelike and particle-like properties
the principle stated by Werner Heisenberg that it is impossible to know simultaneously the exact position and velocity of a particle; the principle becomes important only for particles of very small mass
the branch of physics that examines the wave motion of objects on the atomic size
An equation that describes how the electron matter-wave changes in space around the nucleus
A mathematic expression that describes the motion of the electron's matter-wave in terms of time and position in the region of the nucleus.
electron density diagram
The pictorial representation for a given energy sub level of the quantity() as a function of r
electron cloud depiction
An imaginary representation of an electron's rapidly changing position around the nucleus over time
radial probability distribution plot
The graphic depiction of the total probability distribution() of an electron in the region near the nucleus.
A shape that defines the volume around an atomic nucleus within which an electron spends a given percentage of its time
principal quantum number(n)
A positive integer that specifies the energy and relative size of an atomic orbital; a number that specifies an energy level in an atom
angular momentum quantum number(l)
An integer from 0 to n-1 that is related to the shape of an atomic orbital
magnetic quantum number(ml)
An integer from -l through 0 to l that specifies the orientation of an atomic orbital in the three dimensional space about the nucleus
A specific energy state of an atom given by the principal quantum number (n)
An energy substate of an atom within a level. Given by the n and l values, the sub level designates the size and shape of the atomic orbitals
An atomic orbital with l=0
An atomic orbital with l=1