The radius of a hydrogen atom is 0.0000000529177 of a millimeter. Express this number as an approximation.

Question

0.00000000000053
0.0000000006
0.0000000005
0.00000005

Answer 1

To express the radius of a hydrogen atom, which is 0.0000000529177 millimeters, as an approximation, we can look at the significant digits.

The number 0.0000000529177 can be approximated to:

• 0.00000005 (which is 5.29177 x 10^-8)

Thus, the best approximation given the options is:

0.00000005