Multiple Choice
What is the hybridization of the central carbon atom in CH2O (formaldehyde)?
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12. Molecular Shapes & Valence Bond Theory
Hybridization
Multiple Choice
Which of the following molecules has the same shape and hybridization as methane (CH_4)?
A
C_2H_6
B
NH_3
C
SiH_4
D
H_2O
Verified step by step guidance1
Step 1: Identify the molecular geometry and hybridization of methane (CH_4). Methane has a central carbon atom bonded to four hydrogen atoms with no lone pairs, resulting in a tetrahedral shape and sp^3 hybridization.
Step 2: Analyze each given molecule to determine its shape and hybridization. For each molecule, consider the central atom, the number of bonded atoms, and the presence of lone pairs.
Step 3: For C_2H_6 (ethane), focus on one carbon atom. It is bonded to three hydrogens and one carbon, with no lone pairs, so it also has a tetrahedral shape and sp^3 hybridization.
Step 4: For NH_3 (ammonia), the nitrogen has three bonded hydrogens and one lone pair, resulting in a trigonal pyramidal shape and sp^3 hybridization, which differs from methane's shape.
Step 5: For SiH_4 (silane), silicon is bonded to four hydrogens with no lone pairs, similar to methane, so it has a tetrahedral shape and sp^3 hybridization, matching methane's geometry and hybridization.
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