Question

Answer the following questions about quantum mechanics of atoms

a. Estimate the wavelength for an n = 2 to n =1 transition in zirconium

b. A mixture of iron and an unknown material are bombarded with high energy electrons. Two different wavelengths of X-rays are emitted. X-rays with a wavelength of 194 pm come from iron. From what element do X-rays with a wavelength of 229 pm come from?

c. A 14 g bullet leaves a rifle with a speed of 170 m/s. What is its de Broglie wavelength?

d. If the position of the bullet is known to a precision of 0.50 cm, what is the minimum uncertainty with which we could measure its momentum?

Answer 1

(a)

The wavelength of the transition is given by

b)

The X-ray of 229 pm comes from the Chromium.

c)

The de Broglie wavelength is given by

d)

Uncertainty in the position is

Uncertainty in the momentum is given by

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answered by: anonymous