1
Q
specific charge=
A
(e/m) 1.758 x 10^11 C/kg
2
Q
charge and mass in kg of e, n, and p
A
charges:
-1.6 x 10^-19
1.6 x 10^-19
——
masses (kg):
9.1 x 10^-31
1.672 x 10^-27
1.674 x 10^-27
3
Q
radius of nucleus=
A
1.33 x 10^-13 x (mass no. (n+p))^1/3
4
Q
E=
A
h(6.66 x 10^-34) v = hc/λ
5
Q
E total =
A
no. of photons x hc/λ
6
Q
E =
A
Φ (work function) + KE
7
Q
E=
A
hc/λ + KE
8
Q
KE=
A
hc (1/λ - 1/λnot)
9
Q
v =
A
√((2(hv-hvnot))/m)
10
Q
v=
A
√2eVnot/m
11
Q
1j=?ev
A
1.6 x 10^-19eV
12
Q
distance of closest approach
rnot=
A
(2ze^2)/(4πεnot x KE)
13
Q
epsilon value
A
8.85 x 10^-12
14
Q
moving mass=
A
static mass/√1- vel of particle/c
15
Q
λ=
A
h/mv = h/momentum
16
Q
λ=
A
h/√2mKE
17
Q
angular momentum (mvr)
A
n(h/2π)
18
Q
2πr=
A
nλ
19
Q
λ(A’)=
A
√150/Vnot =12.24/√Vnot
20
Q
e have min PE when?
e have max PE when?
A
n=1
n= ∞
e has no +ve PE value
21
Q
A
chemistry formulas
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