Gen Chem- Electronic Structure and Periodic Trends Flashcards
equation to calculate moles
weight of sample ( g)/ GMW
equivalent of moles in molecules
6.02x 10^23
usual hydrogen oxidation number
+1
usual oxygen oxidation number
-2
usual alkali metal oxidation #
+1
alkaline earth metal usual oxidation #
+2
aluminum oxidation #
+3
what are the 4 quantum numbers
n, l , ml, ms
what does the n quantum number mean
principal #, # of atomic shells
what does the l quantum number mean? and how is it calculated?
angular momentum, shape of atomic orbital
between 0 and n-1
what does the ml quantum number mean?and how is it calculated?
magnetic #, orientation of the orbital in a given shape
between -l and +l
what does the ms quantum number mean? and how is it calculated?
spin quantum #
+1/2 or -1/2
which principal states that you must always fill the lowest energy orbitals first?
Aufbau Principle
which principal states that no 2 e- in a single atom can have the same 4 quantum #’s?
pauli exclusion principle
which principal states that you must distribute a single e- parallel spin before filling each subshell with a 2nd spin e-?
Hund’s rule
