The radius of a hydrogen atom is 0.000000000025 meter. How would you express this radius in scientific notation?
In scientific notation, the radius of a hydrogen atom would be expressed as 2.5 × 10^-11 meters.
To express the radius of a hydrogen atom in scientific notation, you can rewrite it as follows:
0.000000000025 meter = 2.5 x 10^(-11) meter
To express a number in scientific notation, you need to represent it as a product of a number between 1 and 10 and a power of 10. However, the given radius is already in decimal form with one non-zero digit to the left of the decimal point.
To convert it into scientific notation, move the decimal point to the right until there is one non-zero digit to the left of the decimal point. Count the number of places you moved the decimal point, and that will be the exponent of 10.
In this case, you need to move the decimal point 10 places to the right to align it to the right of the non-zero digit. Therefore, the exponent of 10 would be -10 because you moved it to the right.
The radius of the hydrogen atom, 0.000000000025 meter, in scientific notation, is 2.5 x 10^(-11) meter.