Arrange the hydrides of group 16 elements in order of increasing acid nature.

Explanation

To arrange the hydrides of group 16 elements (O, S, Se, Te) in order of increasing acidic nature, we need to consider the ability of these hydrides to release H⁺ ions. The acidic nature of these hydrides generally increases as we move down the group due to the decreasing bond strength between hydrogen and the central atom, which makes it easier for the hydrogen to dissociate.

### Step-by-Step Solution:

1. **Identify the Hydrides**: The hydrides of group 16 elements are:
- H₂O (water)
- H₂S (hydrogen sulfide)
- H₂Se (hydrogen selenide)
...