Teaching UP B.Ed (Paper 1 & 2) Mock Test 2025 Chemistry Structure of Atom Atomic Structure

For an electron, α-particle and proton to have same de Broglie wavelength, their kinetic energy should be in the order :

1
Eα > Ep > Ee 
2
Ee > Ep > Eα
3
Ep > Eα > Ee
4
Ep = Eα = Ee
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