MDCAT Chemistry MCQ #777

The wavelength of an electron moving with a velocity of 2.05 × 10^7 m/s is?

MDCAT Chemistry MCQ #777

  1. Question 1

    Q1. The wavelength of an electron moving with a velocity of 2.05 × 10^7 m/s is?

    • A) 0.355 Å
    • B) 3.55 Å
    • C) 35.5 Å
    • D) 355 Å

    Answer: 3.55 Å

    Explanation: λ = h/mv, λ = 3.55 Å (using h = 6.626 × 10^-34 and m = 9.11 × 10^-31).