MHT CET202121 Sep 2021Evening ShiftChemistrySolid StateActual
What is the density of an element (At. mass 100 ~g ~mol ⁻¹ ) having BCC structure with edge length 400 pm ?
Options
- A3.2 ~g ~cm ⁻³
- B8.2 ~g ~cm ⁻³
- C5.18 ~g ~cm ⁻³
- D4.8 ~g ~cm ⁻³
Correct answer
C. 5.18 ~g ~cm ⁻³
Step-by-step solution
aligned & a =400 pm =400 10⁻¹² ~m & =400 10⁻¹⁰ ~cm & =4 10⁻⁸ ~cm & Z =2( for BCC ) & d = Z M N _ A a ^3 = 2 100 6.022 10²³ (4 10⁻⁸ )^3 =5.18 ~g ~cm ⁻³ aligned