atomic structure Flashcards
(36 cards)
Z
atomic number, # protons, goes bottom left
A
mass number, + protons and neutrons, goes top left
utility of mass number
gives mass of atom in amu and mass of mole of atoms in grams
1 carbon = 12 amu
1 mol carbon = 12 g
electron energy has _____ energy when further away from nucleus
higher
formula for the energy of a photon/quantum
E = hf = hc/lamda
formula for angular momentum of an electron
L = nh/2pi
formula for energy of the electron
E = - RH/n^2
energy is ______ proportional to principle quantum number
directly
formula relating energy of electron to that of photon emitted when that electron goes down in energy level
E = hf = -RH(1/ni^2 - 1/nf^2)
absorption spectrum looks the same as the
emission spectrum
heisenberg uncertainty principle
can’t know position and momentum with perfect accuracy at the same time
maximum number of electrons within a shell
2n^2 where n is the principle quantum number
principle quantum number
n
azimuthal quantum number
angular momentum, l
possible values of l
0 to (n-1)
if l = 1, what general subshell?
p
if l = 0, what general subshell?
s
if l = 2, what general subshell?
d
if l = 3, what general subshell?
f
if n=4 and l=2, what subshell are we in?
4d
ml represents
particular orbital within subshell in which an electron is most likely to be found
ml is the ____ quantum number
magnetic
for any n, there are this many orbitals
n^2
number of possible values of ml
2l + 1
