Arrange the following compounds in increasing order of their property as indicated :
(i) `underset("(reactivity toward nucleophilic addition reaction)")underset()(CH_(3)COCH_(3),C_(6)H_(5)COCH_(3),CH_(3)CHO`)
(ii) `Cl-CH_(2)-COOH, F-CH_(2)-COOH,CH_(3)-COOH`( acidic character)

Explanation

To solve the question, we will analyze the two parts separately.

### Part (i): Reactivity toward nucleophilic addition reaction

We have the following compounds:
1. CH₃COCH₃ (Acetone - a ketone)
2. C₆H₅COCH₃ (Benzyl methyl ketone - a ketone)
3. CH₃CHO (Acetaldehyde - an aldehyde)
...