The density of chromium metal is 7 ~g ~cm ⁻³ . If edge length of unit cell is 300 pm , identify the type of unit cell. (At. mass Cr =52 )

Step-by-step solution

aligned & d = ZM N _ A a ^3 & Z = d N _ A a ^3 M & a =300 pm & a =300 10⁻¹⁰ ~cm & a =3 10⁻⁸ ~cm & = 7 6.022 10²³ (3 10⁻⁸ )^3 52 aligned Unit cell is Body centred cubic