Example: The radius of a hydrogen atom is 0.0000000000529 m.

Answer

To express the number 0.0000000000529 in scientific notation, we follow these steps: 1. Identify the decimal point and move it to the right until there is only one non-zero digit to its left. Moving the decimal point in 0.0000000000529 until it is between the 5 and the 2 results in 5.29. 2. Count the number of places the decimal moved. In this case, it moved 11 decimal places to the right. 3. Because the decimal moved to the right (representing a value less than 1), the exponent for the base 10 will be negative. 4. Write the final expression. The coefficient is 5.29 and the exponent is -11. Therefore, the radius of a hydrogen atom in scientific notation is 5.29 x 10^-11 m.