An alpha particle (mass = 6.6X10⁻²⁴ g) emitted by a radium isotope travels at 3.4X10⁷ ± 0.1X10⁷ mi/h.
(a) What is its de Broglie wavelength (in meters)?

Respuesta :

The de Broglie wavelength is  0.665 * [tex]10^{-14}[/tex] m.

Alpha particles are radioactive particles having two protons and two neutrons. It is the helium nucleus.

Δx * Δp = h / 2Π

where Δx = uncertainty in position

          Δp = uncertainty in momentum

          h = plank's constant

Δv =  0.1X10⁷ mi / h = 4.47 * [tex]10^{5}[/tex] m / s

we know that,

p = m * v

Therefore, Δp = m * Δv

                        = 6.6X10⁻²⁴ * 4.47 * [tex]10^{5}[/tex]

                        = 29.502 * [tex]10^{-19}[/tex] g m / s

                        = 29.502 * [tex]10^{-22}[/tex] kg m / s

p = m * v

  = 6.6X10⁻²⁴ * 1.51 * [tex]10^{7}[/tex]

  = 9.966 * [tex]10^{-20}[/tex] kg m / s

De Broglie wavelength:

λ = h / p

  = 6.63 * [tex]10^{-34}[/tex] /  9.966 * [tex]10^{-20}[/tex]

λ= 0.665 * [tex]10^{-14}[/tex] m

Hence, the de Broglie wavelength is  0.665 * [tex]10^{-14}[/tex] m.

For more information on de Broglie's hypothesis click on the link below:

https://brainly.com/question/4851688

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