1. The 1s--> 2p transition in a hydrogen-like atom occurs at 7.407 x 105 cm-1. a....
1. The 1s--> 2p transition in a hydrogen-like atom occurs at 7.407 x 105 cm-1.
a. What is the ionization energy of this atom in Joules?
b. If this atom is ionized with light with a wavelength 4.00 nm, what is the de Broglie wavelength of the ejected electrons?
Homework Answers
ionization energy E = hv
h =plalck's constant = 6.626 *10^-34 J.s
v = wavenumber = 7.407*10^5 cm^-1
frequency = wavenymber * speed of light = (7.407* 10^5) cm ^-1 * (3*10 ^10) cm/s
= 22.22 * 10^15 s^-1
Energy = (6.626 * 10^-34) J.s * (22.22 * 10^15) s^-1
= 1.47 * 10^-17 J
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