Question

the de Broglie wavelength of an electron is 66 nm. the velocity of the electron is​

Answer 1

wavelength = h / (mv)..this is de broglie's equation..

so from that.. v = h/ (m × wavelength )

v =6.6×10^-34 / (9.1×10^-31 × 66×10^-9)

= 0.0109×10^6

or

= 10989