Question

Question

Question

hunus · Answer

A rough estimate of the radius of a nucleus is provided by
the formula r  kA1/3, where k is approximately 1.3 
1013 cm and A is the mass number of the nucleus. Estimate
the density of the nucleus of 127I (which has a nuclear mass
of 2.1  1022 g) in grams per cubic centimeter. Compare
with the density of solid iodine, 4.93 g cm3

hunus · Answer

I solved and got 1.80 x 10^14 but that doesn't seem correct.

anonymous · Answer

Why not?  :)

hunus · Answer

It seems like a rather large number when the density of solid Iodine is 4.93 g/cm
^3 :o

anonymous · Answer

Indeed it does.  That would imply that most of solid iodine is empty space, wouldn't it?  :)

hunus · Answer

ahhhh, Thanks :D

anonymous · Answer

Imagine what would happen to an object if all of its nuclei were squished together instead of being surrounded by empty space.  Such an object is called a neutron star, and its density is immense.