Similar to electron diffraction, neutron diffraction microscope is also used for the determination of the structure of molecules. If the wavelength used here is 800 pm, calculate the characteristic velocity associated with the neutron.

Solution

According to de-Broglie equation.

space space space space space space space straight lambda space equals space straight h over mv space space or space space straight v space equals space fraction numerator straight h over denominator straight m space cross times space straight lambda end fraction space space space space space... left parenthesis 1 right parenthesis Here space straight h space equals space 6.626 space cross times 10 to the power of negative 34 end exponent space kg space straight m squared straight s to the power of negative 1 end exponent semicolon Mass space of space neutron space left parenthesis straight m right parenthesis space equals space 1.675 space cross times 10 to the power of negative 27 end exponent kg semicolon space space space space space space space space space space space space space space space space space space space space space space space space straight v space equals space 800 space cross times space 10 to the power of negative 12 end exponent straight m Substituting space the space values space in space left parenthesis 1 right parenthesis comma space we space have straight v space equals fraction numerator 6.626 space cross times space 10 to the power of negative 34 end exponent kg space straight m squared straight s to the power of negative 1 end exponent over denominator 1.675 space cross times 10 to the power of negative 27 end exponent kg space cross times left parenthesis 800 space cross times 10 to the power of negative 12 end exponent straight m right parenthesis end fraction space space space equals 4.94 space cross times space 10 to the power of 4 space ms to the power of negative 1 end exponent

Some More Questions From Structure of Atom Chapter

What is the name of the remaining part of atom except outer orbit?

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Structure Of Atom

Similar to electron diffraction, neutron diffraction microscope is also used for the determination of the structure of molecules. If the wavelength used here is 800 pm, calculate the characteristic velocity associated with the neutron.

Some More Questions From Structure of Atom Chapter

What is the name of the remaining part of atom except outer orbit?

Name the particles which determine the mass of an element.

What are α-particles?

Why were neutrons discovered very late?

What are the fundamental particles present in a neutral atom having atomic number greater than 1?

Do protons and neutrons have identical mass?

When α-particles are sent through a thin metal foil, most of them go straight through the foil. What inference do you draw from it?

What did Rutherford's experiment on scattering of particles show for the first time?

What is Plum-Pudding model of the atom?

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