Identify the incorrect statement among the following:

Question

Accepted Answer

1. **Methane (CH₄):** The central carbon atom is $sp^3$ hybridised with 0 lone pairs. The molecule has a regular tetrahedral geometry with a bond angle of **109.5°** .
2. **Ammonia (NH₃):** The central nitrogen atom is $sp^3$ hybridised but possesses 1 lone pair. According to VSEPR theory, the repulsion between the lone pair and bond pairs ($lp-bp$) is greater than between bond pairs ($bp-bp$), causing the bond angle to decrease from 109.5° to **107°** .
3. **Water (H₂O):** The central oxygen atom is $sp^3$ hybridised with 2 lone pairs. The repulsive interaction follows the order $lp-lp > lp-bp > bp-bp$. The presence of two lone pairs squeezes the bond angle further to **104.5°** .
4. **Verification of Statements:**
   - **Option A:** States H₂O angle (104.5°) > CH₄ angle (109.5°). This is **Incorrect**.
   - **Option B:** States CH₄ angle (109.5°) > NH₃ angle (107°). This is **Correct**.
   - **Option C:** All angles (109.5°, 107°, 104.5°) are > 90°. This is **Correct**.
   - **Option D:** States H₂O angle (104.5°) < NH₃ angle (107°). This is **Correct**.

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