The radius of a hydrogen atom, given as \(0.0000000529177\) millimeters, can be approximated in scientific notation.
To express this number in scientific notation, we can write it as:
\[ 5.29177 \times 10^{-8} \text{ mm} \]
For a more rounded approximation, we can simplify it to:
\[ 5.3 \times 10^{-8} \text{ mm} \]
Thus, the radius of a hydrogen atom can be approximated as \(5.3 \times 10^{-8} \text{ mm}\).