Why is the H–N–H angle in NH3 smaller than the H–C–H bond angle in CH4? The...
Why is the H–N–H angle in NH3 smaller than the H–C–H bond angle in CH4?
The electron-pair geometry for NH3 is tetrahedral. with ______ bonding pair(s) of electrons and ______ lone pair(s) of electrons. A lone pair takes up more room than a single bond, causing the H–N–H angle to be smaller than the bond angle in a regular tetrahedron such as CH4.
Why is the H–N–H angle in NH4+ identical to the H–C–H bond angle in CH4?
The electron-pair geometry for NH4+ is tetrahedral _____ bonding pair(s) of electrons and _____ lone pair(s) of electrons. Since CH4 contains ____ bonding pair(s) of electrons and ______ lone pair(s) of electrons, the bond angles for both molecules should be the same.
Homework Answers
1. Why is the H–N–H angle in NH3 smaller than the H–C–H bond angle in CH4?
Ans: The electron-pair geometry for NH3 is tetrahedral. with 3 bonding pairs of electrons and 1 lone pair of electrons. A lone pair takes up more room than a single bond, causing the H–N–H angle to be smaller than the bond angle in a regular tetrahedron such as CH4.
2. Why is the H–N–H angle in NH4+ identical to the H–C–H bond angle in CH4?
Ans: The electron-pair geometry for NH4+ is tetrahedral with 4 bonding pairs of electrons and 0 lone pair of electrons. Since CH4 contains 4 bonding pairs of electrons and 0 lone pairs of electrons, the bond angles for both molecules should be the same.
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