Question:
Identify the hydride which is not correctly matched with the example given in brackets.
Identify the hydride which is not correctly matched with the example given in brackets.
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HF is actually an electron-rich hydride due to the lone pairs on fluorine. Electron-precise hydrides don't have extra or deficient electrons.
Updated On: Jun 4, 2025
- Saline hydride -- (NaH)
- Electron rich hydride -- (H2O)
- Electron deficient hydride -- (B2H6)
- Electron precise hydride -- (HF)
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The Correct Option is D
Solution and Explanation
Hydrides are categorized as:
- Saline (Ionic): Formed by alkali/alkaline earth metals (e.g., NaH)
- Electron-rich: Contain lone pairs (e.g., H2O)
- Electron-deficient: Lack sufficient electrons for bonding (e.g., B2H6)
- Electron-precise: Have exact electrons required for bonding (e.g., CH4, NH3)
HF contains a lone pair on fluorine, making it electron-rich, not electron-precise.
- Saline (Ionic): Formed by alkali/alkaline earth metals (e.g., NaH)
- Electron-rich: Contain lone pairs (e.g., H2O)
- Electron-deficient: Lack sufficient electrons for bonding (e.g., B2H6)
- Electron-precise: Have exact electrons required for bonding (e.g., CH4, NH3)
HF contains a lone pair on fluorine, making it electron-rich, not electron-precise.
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