$4($a$)$ Show$/$write the basis, Brovols lattice and the primtive unit cell of the $2-0$ crsytal structuregiven below.$($b$)$ At room temperature metals are sually better themal conductors compared to insulatorshowever, diamond has ane of the hghest themal conductivities $($x$)$ of al materials at roomtemperature, although it is a good insulator at RT$.$ Why do the metals have higherK than insulators?And what is the reason for dmond having the hghest k at room temperature?