Multiple choice One angstrom is equal to 10-9 m 10- 12 m 10-10 m 10-15 m Reveal answer Fill a bubble to check yourself C Correct answer Explanation One angstrom (Å) is 10^-10 meters, commonly used to measure atomic distances and bond lengths. 10^-9 m is a nanometer, 10^-12 m is a picometer, and 10^-15 m is a femtometer.