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Chem Exam
Exam 2
15
Chemistry
Undergraduate 2
11/02/2010
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Term
atomic radius
 Definition
-across a row -> decrease
-down a column -> increase
Term
ionic radius
 Definition
-positive ions -> smaller radii
-negative ions -> bigger radii
Term
ionization energy
 Definition
-across a row -> increases
-down a column -> decreases
Term
electron affinity
 Definition
-when positive, the process is endothermic
-when negative, the process is exothermic
Term
metallic character
 Definition
-across a row -> decreases
-down a column -> increases
Term
q.n. n
 Definition
n= 1, 2, 3, 4,…
Term
q.n. l
 Definition
l= 0, 1, 2,… (n-1)
Term
q.n. ml
 Definition
ml= -l…0…+l
Term
ms
 Definition
- +1/2 -> spin up
- -1/2 -> spin down
Term
λ= h/mv
 Definition
Term
v=
 Definition
velocity of particle
Term
m=
 Definition
mass of particle
Term
h= Planck's constant
 Definition
6.626 X 10 ^-34
Term
Avogadro's number
 Definition
6.022 X 10^23
Term
electronegativity
 Definition
-across a row -> increases
-down a column -> decreases
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