Question

The size of a hydrogen atom is about 1.2×10−10
m across. The size of an oxygen atom is 0.000000000152 m across. What is the difference between the sizes of these atoms in scientific notation?(1 point)
Responses

3.2×10−11
m
3.2 times 10 superscript negative 11 baseline m

3.2 ×10−10
m
3.2 times 10 superscript negative 10 baseline m

3.2×10−9
m
3.2 times 10 superscript negative 9 baseline m

2.72×10−10
m
2.72 times 10 superscript negative 10 baseline m

Answer 1

3.2 × 10^−11 m

Work: 1.52×10^−10 − 1.20×10^−10 = 0.32×10^−10 = 3.2×10^−11 m.