Arrange the above hydrides in order of increasing basic nature.

Explanation

To arrange the hydrides NH3 (ammonia), PH3 (phosphine), AsH3 (arsine), and SbH3 (stibine) in order of increasing basic nature, we can follow these steps:

### Step 1: Understand Basic Nature
Basic nature refers to the ability of a compound to donate a pair of electrons. In this case, we are dealing with Lewis bases, which can donate lone pairs of electrons.

**Hint:** Remember that the more readily a compound can donate its lone pair, the stronger its basic nature.

### Step 2: Analyze the Group Trend
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