Question
Asked Nov 13, 2019
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  1. How are the bond angles around a central atom affected by the following?
    • Presence of a lone pair on the central atom
    • Presence of a double bond involving the central atom 
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Expert Answer

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Step 1

According to the VSEPR theory, the order of repulsion is lp-lp > lp-bp > bp-bp. These repulsions change the bond angle around the central atom.

Step 2

Consider the molecules CH4 and NH3. The central atom in both the molecules is sp3 hybridized. The geometry of these molecules is tetrahedral, so the expected bond angle is 109.47o. The bond angle in CH4 (H-C-H) is 109.47o but the bond angle in NH3 (H-N-...

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Science

Chemistry

Chemical bonding

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