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Chemistry Chapter 5 Vocab Terms
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Chemistry
11th Grade
11/27/2012

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Term
energy levels
Definition
fixed energies an electron can have
Term
quantum
Definition
energy needed to move an electron from 1 level to another
Term
quantum mechanical model
Definition
modern description of the electrons in atoms
Term
atomic orbital
Definition
region of space in which there is a high probability of finding an electron
Term
electron configurations
Definition
ways in which electrons are arranged
Term
Hund's rule
Definition
electrons occupy orbitals of the same energy
Term
amplitude
Definition
waves height from 0 to the crest
Term
wavelength
Definition
distance between crests
Term
frequency
Definition
number of wave cycles to pass a certain point
Term
hertz
Definition
SI unit of cycles per minute
Term
electromagnetic radiation
Definition
radiowaves, microwaves, infrared, visible light, etc.
Term
spectrum
Definition
different frequencies of color
Term
atomic emmission spectrum
Definition
frequencies of light emitted by an element
Term
ground state
Definition
when electrons principle quantum number is 1
Term
photons
Definition
light quanta
Term
fourth principle energy level has
Definition
16 orbitals
Term
energy levels and number of electrons
Definition

level 1=2

level2=8

level 3=18

level 4=32

level 5=50

Term
order of sublevels
Definition
s, d, p, f
Term
the quantum mechanical model of the atom
Definition
is concerned with the probability of finding an electron in a certain position
Term

the max number of electrons that can occupy the 3rd principle energy level is

 

Definition
18
Term
as the frequency of light increases, the wavelength
Definition
decreases
Term
the formula 2n^2 represents
Definition
the max number of electrons that can occupy an energy level
Term
in order to occupy the same orbital, two electrons must have
Definition
opposite spin
Term
stable electron configurations are likely to contain
Definition
filled energy sublevels
Term
according to hund's rule, when electrons occupy orbitals of equal energy, one electron enters each orbit until
Definition
there are two electrons in each orbital
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