Question

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Question
The radius of a hydrogen atom is 0.0000000529177 of a millimeter. Express this number as an approximation.(1 point)
Responses

0.0000000053
0.0000000053

0.00000006
0.00000006

0.00000005
0.00000005

0.0000005
0.0000005

Answer 1

To approximate the radius of a hydrogen atom, which is given as 0.0000000529177 millimeters, you can round this number to a nearby value.

The most significant digit in this number is the "5" in the sixth decimal place. Rounding to two significant figures gives us:

0.0000000529177 ≈ 0.00000005.

Therefore, the best approximation among the options given is:

**0.00000005**.