Answer:
22202 are the number of atoms to be placed side by side to span a distance of 6.0um.
What are atoms?
The smallest unit of substance into which it is possible to divide without releasing electrically charged particles is the atom.
In addition, it is the smallest unit of matter with chemical element-like characteristics. The atom is thus the fundamental component of chemistry.
Explanation:
An atom of Rhodium (Rh) diameter d = 2.7x[tex]10^{-10}[/tex] m.
Now assuming that keeping n atoms side by side , the distance will be L= 6um = 6.5 x [tex]10^{-6}[/tex] m.
Now, the total length is given by total sum of diameter,
so the equation is given by,
L= nd
n= [tex]\frac{L}{d}[/tex]
n= [tex]\frac{6.0x 10^{-6} m}{2.7x10^{10} } m[/tex]
n= 22202 atoms.