Multiple Choice
Which best describes any unhybridized p orbitals on the central carbon atom of ethene (C2H4)?
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12. Molecular Shapes & Valence Bond Theory
Hybridization
Multiple Choice
What is the hybridization of the central atom in the iodine pentafluoride (IF_5) molecule?
A
sp^3d
B
sp^3
C
sp^3d^2
D
sp^2
Verified step by step guidance1
Identify the central atom in the molecule IF_5, which is iodine (I).
Determine the number of valence electrons on the central iodine atom. Iodine is in group 17, so it has 7 valence electrons.
Count the number of atoms bonded to iodine and any lone pairs on iodine. IF_5 has 5 fluorine atoms bonded to iodine, and since iodine has 7 valence electrons, after forming 5 bonds, 2 electrons remain as a lone pair.
Calculate the steric number, which is the sum of bonded atoms and lone pairs around the central atom: 5 bonded atoms + 1 lone pair = 6.
Use the steric number to determine the hybridization. A steric number of 6 corresponds to an sp^3d^2 hybridization for the central atom.
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