Constants Flashcards
1
Q
c
A
2.998 x 10^8 m/s
2
Q
h
A
6.626 x 10^-34 J s
3
Q
R,H
A
1.096776 x 10^7 m^-1
4
Q
Hydrogen line spectra emission
A
ΔE = E,f - E,i = h c R,H ((1/ni^2) - (1/nf^2)) = E,photon = hv
5
Q
de Broglie
A
λ = h/(mv)
6
Q
Heisenberg uncertainty
A
(Δx)(Δmv) >= h/(4*pi)
7
Q
wave equation
A
psi
8
Q
probability density
A
(psi)^2
9
Q
principle quantum no.
A
n
10
Q
azimuthal quantum no.
A
l
11
Q
l = 0
A
s
12
Q
l = 3
A
f
13
Q
magnetic quantum no.
A
m,l; -l <= l
14
Q
no. of nodes in s orbital
A
n - 1
15
Q
no. orbitals in a shell
A
n^2
16
Q
spin quantum no.
A
m,s; +1/2 or -1/2
17
Q
pauli exclusion principle
A
a combo of 4 quantum nos. (n l m,l m,s) is unique to one orbital in an atom
18
Q
hund’s rule
A
in degenerate orbitals, lowest energy is obtained when the no. of electrons w/ same spin direction is maximized
19
Q
h c R,H
A
2.18 x 10^-18 J
20
Q
1/λ
A
1/λ = R,H ((1/ni^2) - (1/nf^2))
