cerium(Ce) metal must absorb a photon having energy of at least 4.65x10^(-19) J for an electron...

cerium(Ce) metal must absorb a photon having energy of at least 4.65x10^(-19) J for an electron to be ejected by the photoelectron effect. What is the wavelength of light having photons of this energy? ____nm

Expert Solution

E = 4.65*10^-19 J

c = 3*10^8m/sec

h = 6.625*10^-34 j-sec

E = hc/

= hc/E

= 6.625*10^-34 * 3*10^8 /4.65*10^-19 = 4.27*10^-7 m

= 427*10^-9 m [ 1nm = 10^-9 m]

= 427nm >>>>answer

queen_honey_blossom answered 1 year ago

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