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)

Question

0 3.2 × 10 ° m
O 2.72 × 10 10 m
0 3.2 × 10 10 m
O 3.2 × 10 11 m

Answer 1

The difference between the sizes of the atoms can be found by subtracting the size of the hydrogen atom from the size of the oxygen atom.

0.000000000152 m - 1.2 × 10^-10 m = 0.000000000152 m - 0.00000000012 m

Simplifying the decimal value gives:

0.000000000032 m

Converting this to scientific notation gives:

3.2 × 10^-11 m

Therefore, the correct answer is:

O 3.2 × 10^-11 m