Answer:

Step-by-step explanation:
Given,
Velocity of the neutron = 753 m/s
The expression for the deBroglie wavelength is:
Where,
is the deBroglie wavelength
h is Plank's constant having value
m is the mass of neutron having value
v is the speed of neutron = 753 m/s
Applying in the equation as:

1 m = 10¹² pm
So,
