Electronic Devices Question 161
Question: Potassium has a bcc structure with nearest neighbour distance 4.525 Å. Its molecular weight is 39. Its density in kg/m3 is
[DCE 1997]
Options:
A) 900
B) 494
C) 602
D) 802
Show Answer
Answer:
Correct Answer: A
Solution:
Density
a
(d = nearest neighbour distance = distance between centres of two neighbouring atoms
On putting the values we get r = 907
