Question

A given metal crystallizes out with a cubic structure having edge length of 361 pm. If there are four metal atoms in one unit cell, what is the radius of one atom ?Option 1) 80 pm Option 2) 108 pm Option 3) 40 pm Option 4) 127 pm

Answer 1

Answer:

4r=√2a

r=361/2√2=127pm

So the correct answer is 127pm