Chem 121 UNR final Questions with Verified Solutions

Chem 121 UNR final Questions with Verified Solutions

magnetic quantum number (ml)✔✔ml=l..o..l



aufnaws principle✔✔fill electrons in lowest orbital then move up

-start in s orbital



pauli exclusion✔✔two electrons can occupy the same orbital only if their spins are opposite



hunds rule✔✔1 electron goes into every orientation box before going back



S+P✔✔=n



d=✔✔n-1



f=✔✔n-2



valence electrons✔✔count across periodic table- skip d orbital



noble gas configuration✔✔start at the closest noble gas with a lesser number of protons



exceptions for EC✔✔cr

mo

w

cu

, aq

au



atomic size✔✔increase as it goes down

decreases as it goes across



ionization energy✔✔decreases as it goes down

increases as it goes across



election affinity✔✔increases as it goes down - less e's to add

decreases as it goes across - more e's to add



effective nuclear charge✔✔z=z-s



Homogenous Mixture✔✔mixture same throughout EX) Air



Heterogenous Mixture✔✔Mixture different throughout EX) Smoke



Density=✔✔Mass(g)/Volume(l)



Filtration✔✔Used to sperate a hetro mixture



Distillation✔✔from Homo Mixture, Use boiling points



Kilo✔✔1x10^3