Compare the Acidic strength of the following
`(a)NH_(3)" "(b) PH_(3)`
`(c)AsH_(3)" "(d) SbH_(3)`
`(e) BiH_(3)`

Explanation

To compare the acidic strength of the compounds NH₃, PH₃, AsH₃, SbH₃, and BiH₃, we need to consider their positions in the periodic table and how their atomic size affects their bond strength with hydrogen.

### Step-by-Step Solution:

1. **Identify the Group**: All the given compounds belong to Group 15 of the periodic table, which includes nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), and bismuth (Bi).

2. **Understand Atomic Size Trend**: As we move down the group from nitrogen to bismuth, the atomic size increases. This is due to the addition of electron shells.

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