Qu $6$ Iron has BCC $($Body Centered Cubic$)$ Crystal Structure at $20C,$ and an atomic radius, R$,$ of $0\mathrm{.}124$ starting from the origin $(0,0,0).$

Qu $7$ Iron has BCC $($Body Centered Cubic$)$ Crystal Structure at $20C,$ and an atomic radius, $R,$ of $0\mathrm{.}124nm.$ Compute the lattice constant, $a,$ in nanometers $[$nm$].$ Express your answer in nanometers to three significant figures.

Qu $8$ Iron has BCC $($Body Centered Cubic$)$ Crystal Structure at $20C,$ and an atomic radius, $R,$ of $0\mathrm{.}124nm.$ What is the number of atoms on the $[[$:$[1,1,1]\}$ crystallographic vector? Insert corresponding number in the answer box provided.

Qu $9$ Iron has BCC $($Body Centered Cubic$)$ Crystal Structure at $20C,$ and an atomic radius, $R,$ of $0\mathrm{.}124nm.$ Calculate the length of the vector $[\left[\begin{array}{ccc}1& 1& 1\end{array}\right]$ in $[$nm$].$ Express your answer in nanometers to three significant figures.

Qu $10$ Iron has BCC $($Body Centered Cubic$)$ Crystal Structure at $20C,$ and an atomic radius, $R,$ of $0\mathrm{.}124$ atoms$/$nm to three significant figures.