Chapter 7: Electronic Structure Flashcards
Rutherford’s model did not address
how the electrons occupied the space around the nucleus
initially, it was assumed that electrons held … about the nucleus, leading to the … model of the atom
fixed orbits; planetary
under certain conditions, atoms and molecules emit and absorb energy in the form of
light
in the late 19th century, physicists knew that light could be described as
waves
waves are … in nature: they…
periodic; repeat at regular intervals of both time and distance
any wave is described by its
wavelength, frequency, and amplitude
wavelength (λ, …) is the …
lambda; distance between one peak to the next
in SI system, wavelength is measured in
meters
frequency (v, ..) is the number of …
nu; waves that pass a fixed point in 1 second
the SI unit for frequency si … and is called ..
s^-1; hertz (Hz)
amplitude is the … of a wave
maximum height
height of a wave varies between
+Amax and -Amax
light waves are called… because they consist of …, which are perpendicular to … and to the direction of …
electromagnetic radiation; oscillating electric and magnetic fields; each other; propagation;
the speed at which a wave travels is the product of its
wavelength and frequency
the periodic nature of wave motion is not always
easily seen
the experimentally measured speed of light shows that all electromagnetic radiation travels at the
same speed in a vacuum, no matter what its wavelength
the speed of light in a vacuum is one of the fundamental constants of nature:
3.00 x 10^8 m/s
c=
λv
the amplitude is the vertical …
displacement from the undisturbed medium
the length of time that it takes for one complete wave to pass a point is
deltat
wavelength and frequency are
inversely proportional
the human eye can detect only a very small part of the electromagnetic range, called
visible light
visible light includes wavelengths from … to … nm
400; 700
order of colors for visible spectrum:
VIBGYOR