Chemistry - Solid State Question with Solution | TestHub

For a simple cubic unit cell, the relationship between the edge length $a$ and the atomic radius $r$ is given by:

$a=2r$

Given $r=170\text{ pm}$, substituting this value yields:

$a=2\times 170\text{ pm}=340\text{ pm}$

Converting picometers to centimeters using $1\text{ pm}=10^{-10}\text{ cm}$:

$a=340\times 10^{-10}\text{ cm}=3.40\times 10^{-8}\text{ cm}$

Answer: $3.40\times 10^{-8}\mathrm{cm}$