Please check my answer:
Place the numbers in order of largest to smallest.
2.3 × 10−10 ; 3.2 × 10−10 ; 2.3 × 10−12 ; 2.3 × 10−8...
(2.3 × 10^-8 ; 3.2 × 10^-10 ; 2.3 × 10^-10 ; 2.3 × 10^-12)
Your answer is correct! Well done. The correct order from largest to smallest is:
2.3 × 10^-8
3.2 × 10^-10
2.3 × 10^-10
2.3 × 10^-12