Estimate Large and Small Quantities Quick Check

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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

0.00000005
0.00000005

0.0000005
0.0000005

0.00000006
0.00000006

0.0000000053

The correct approximation for the radius of a hydrogen atom as given is 0.00000005.