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Physics
Problem
The longest-wavelength photon that can remove an electron from a neutral atom has wavelength
λ
0
\lambda_0
λ
0
. Which expression gives the atom’s binding (ionization) energy
E
b
E_b
E
b
? a)
E
b
=
2
h
c
λ
0
E_b = \dfrac{2hc}{\lambda_0}
E
b
=
λ
0
2
h
c
b)
E
b
=
h
c
2
λ
0
E_b = \dfrac{hc}{2\,\lambda_0}
E
b
=
2
λ
0
h
c
c)
E
b
=
h
c
λ
0
E_b = \dfrac{hc}{\lambda_0}
E
b
=
λ
0
h
c
d)
E
b
=
ℏ
c
λ
0
E_b = \dfrac{\hbar c}{\lambda_0}
E
b
=
λ
0
ℏ
c
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