About how many times larger in diameter is a ${ }_{29}^{64} \mathrm{Cu}$ nucleus than an ${ }_{13}^{27} \mathrm{Al}$ nucleus?
A) 2.37
B) 1.54
C) 1.33
D) They are about the same size.
E) Some other factor (specify)

Question

Quizplus · Accepted Answer

The size of a nucleus is roughly proportional to the cube root of its mass number. The mass numbers are 64 for Cu and 27 for Al. The cube root of 64/27 is approximately 1.33, indicating that the Cu nucleus is about 1.33 times larger in diameter than the Al nucleus.

About How Many Times Larger in Diameter Is A 2964Cu{ }_{29}^{64} \mathrm{Cu}2964​Cu

About How Many Times Larger in Diameter Is A ${ }_{29}^{64} \mathrm{Cu}$