The bond angle in `H_(2) S` is:

Options

A. `gt NH_3`
B. Same as in `BeCl_2`
C. `gt H_(2)Se, ltH_2O`
D. Same as in `CH_4`

Explanation

To determine the bond angle in H₂S, we will analyze the molecular geometry and the effects of lone pairs on the bond angle.

### Step 1: Determine the molecular geometry of H₂S
H₂S (hydrogen sulfide) has a central sulfur atom bonded to two hydrogen atoms. The sulfur atom has two lone pairs of electrons. The presence of these lone pairs affects the molecular geometry.

**Hint:** Consider the VSEPR theory, which helps predict the shape of molecules based on the repulsion between electron pairs.

### Step 2: Apply the VSEPR theory
According to VSEPR theory, the arrangement of electron pairs around the central atom determines the molecular shape. In H₂S, we have:
- 2 bonding pairs (from H-S bonds)
- 2 lone pairs

This arrangement corresponds to a bent or angular shape.

**Hint:** Remember that lone pairs occupy more space than bonding pairs, influencing the bond angles.

### Step 3: Analyze the bond angle
In a perfect tetrahedral arrangement (which has a bond angle of 109.5°), the presence of lone pairs will compress the bond angle between the hydrogen atoms. In H₂S, the bond angle is reduced due to the lone pair-lone pair and lone pair-bond pair repulsion.

**Hint:** Compare the bond angles in related molecules (like H₂O and NH₃) to understand how lone pairs affect the angles.

### Step 4: Compare with other molecules
- In H₂O, the bond angle is approximately 104.5° due to two lone pairs.
- In NH₃, the bond angle is approximately 107° due to one lone pair.

Since sulfur is larger than oxygen, the bond angle in H₂S will be less than that in H₂O but greater than that in NH₃.

**Hint:** Consider the trend in bond angles as you move down the group in the periodic table.

### Step 5: Conclusion
The bond angle in H₂S is approximately 92.5°, which is less than that in H₂O and NH₃, but it is influenced by the size of the sulfur atom and the presence of lone pairs.

**Final Answer:** The bond angle in H₂S is approximately 92.5°.