Strontium has density of 2.64 and crystallizes with the face-centered cubic unit cell. Find the radius of the strontium atom

Answer 1

mass unit cell = 4*molar mass/6.022E23
volume = mass/density. Solve for volume.
a = volume^1/3
Then 4r = a*2^1/2

Answer 2

idk how do explain it to you but i figured out that it is 200 picometers.

Answer 3

219