Question

Calculate the wavelength of an electron
moving with a velotity Of 2.05X107
ms [Mass of electron
9.1 X10-31 kg​

Answer 1

Answer:

10.19

Explanation:

please mark me as brainliest and follow me

Answer 2

Please mark me brainliest

Mass of electron ( m ) = 9.1 × 10⁻³¹ Kg

Plank's constant ( h ) = 6.626 × 10³⁴ Js

Velocity of electron ( v ) = 2.05 × 10⁷ m/s

According to De - broglie's wavelength,

λ = h/mν

= $\frac{6.626\:\:\times10^-^3^4}{9.1\times10^-^3^1\times2.05\times10^7}$ m

= 0.35 × 10⁻¹⁰ m

= 0.35 A°  or 35 pm (picometer)

1pm = 10⁻¹² m