Match the following molecules with their correct electron dot structures: CH4, H2O, NH3.
Understand the Problem
The question is asking to match given molecules (CH4, H2O, NH3) with their respective electron dot structures. We need to identify which diagram corresponds to each molecule based on their valence electron configurations.
Answer
CH4: tetrahedral; H2O: bent; NH3: trigonal pyramidal.
The electron dot structures are: CH4 has a tetrahedral shape with single bonds to four hydrogen atoms, H2O has a bent shape with two lone pairs on the oxygen atom, and NH3 has a trigonal pyramidal shape with one lone pair on the nitrogen atom.
Answer for screen readers
The electron dot structures are: CH4 has a tetrahedral shape with single bonds to four hydrogen atoms, H2O has a bent shape with two lone pairs on the oxygen atom, and NH3 has a trigonal pyramidal shape with one lone pair on the nitrogen atom.
More Information
These structures are determined by the VSEPR theory. Even if CH4, H2O, and NH3 all are sp3 hybridized, the presence of lone pairs affects the geometry, resulting in different shapes.
Tips
A common mistake is to ignore lone pairs in determining molecular geometry, leading to incorrect shapes.
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