The radius of a hydrogen atom is 0.00000000529177 of a millimeter express this number as an approximation

Answer 1

To express the radius of a hydrogen atom, which is \( 0.00000000529177 \) millimeters, in a more convenient form, we can use scientific notation.

First, we can convert the number to scientific notation:

\[ 0.00000000529177 = 5.29177 \times 10^{-9} \text{ mm} \]

For approximation, we can round \( 5.29177 \) to three significant figures:

\[ \approx 5.29 \times 10^{-9} \text{ mm} \]

So, the radius of a hydrogen atom can be approximately expressed as:

\[ 5.29 \times 10^{-9} \text{ mm} \]