The radius of a hydrogen atom is 0.0000000529177 of a millimeter. Express this number as an approximation.
A. 0.0000000053
B. 0.0000005
C. 0.00000005
D. 0.00000006
The radius of a hydrogen atom is approximately 0.00000005 millimeters.
Thus, the correct answer is C. 0.00000005.
To express the given number as an approximation, we can round it to a more manageable value.
The given radius of a hydrogen atom is 0.0000000529177 mm.
Rounding this number to the nearest whole power of ten, we can approximate it as 0.00000005.
Therefore, the correct answer is C. 0.00000005.
To approximate the given number, we start by looking at the digits after the decimal point.
The first digit after the decimal point is 0, and the second digit is 5. Since the second digit is 5 or greater, we round up the first digit to the nearest whole number. Therefore, the approximation of the given number is 0.00000006, which corresponds to option D.