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Experimentally, the electron affinity of an element can be determined by using a laser light to ionize the
anion of the element in the gas phase:
X(g) + hv→ X(g) + e-
Referring to the given table, calculate the photon wavelength (in nanometers) corresponding to the
electron affinity for fluorine.
Element Electron Affinity (kJ/mol)
C
122
O
141
Se
195
Si
134
F
328
Cl
349
Br
325
I
295

___ nm

Sagot :

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