1.

De Broglie poroposed that moving micro particles exhibit wave behaviours. Electron in a Bohr.s orbit also shows dual nature whose wave length is given by lambda_(e) = (h)/(m_(e)V_(e)) m_(e) = mass of electron , V_(e) = velocity of electron , h = planck.s constant Bohr.s atomic model is in good agreement with De-broglie concept and the electron has fixed energy in Bohr.s orbit : 2pi r = n lambda (constructive wave in phase). A ground satte hydrogen atom is supplies with 17.6 ev of energy through alpha photon. What is the De-broglie wave length of the electron knocked out

Answer»

6.125 Å
2.27 Å
5.75 Å
3.6 Å

Answer :A


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