Chem 266 Section #3: Orbitals

Front 1

VSEPR theory helps predict...

Back 1

VSEPR theory helps predict the spatial arrangement of atoms in a molecule.

Front 2

VSEPR theory states the electrons pairs...

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VSEPR theory states that the electron pairs arrange themselves so they achieve MAXIMAL DISTANCE from each other.

Front 3

The arrangement of electron pairs around an atom takes into consideration both... and ...

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The arrangement of election pairs around an atom take into consideration both bonds and lone pairs.

Front 4

The atomic arrangement of an atom only takes into consideration...

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The atomic arrangement of an atom only takes consideration of bonds.

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Orbitals are regions of space...

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Orbitals are regions of space where the probability of finding an electron is high.

Front 6

Bonding orbitals are known as "" and form "" bonds.

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Bonding orbitals are known as CONSTRUCTIVE INTERFERENCE and form sigma bonds.

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Anti-bonding orbitals are known as "" and result in the reduction of...

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Anti-bonding orbitals are known as DESTRUCTIVE INTERFERENCE and result in the reduction of electron density between 2 nuclei.

Front 8

sp hybridization results when...

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One 2s orbital combines with one 2p orbital to produce 2 sp hybridized atomic orbitals.

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The Energy levels of sp orbitals are somewhere in between...

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The Energy levels of sp orbitals are somewhere in between 2s & 2p orbitals.

Front 10

During the formation of sp hybridized orbital, only "" and "" orbital change.

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During the formation of sp hybridized orbital, only 1 2s and 1 2p orbital changes.

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Any atom whose arrangement of electron pairs is linear will be "" hybridized. However, the "" orbital may or may not be occupied.

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Any atom whose arrangement of electron pairs is linear will be sp hybridized. However, the p orbital may or may not be occupied.

Front 12

π (pi) bonds are a result of the "" overlap of 2 "" orbitals and not formed by "" orbitals.

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π (pi) bonds are a result of the sideways overlap of 2 p orbitals and not formed by hybridized orbitals.

Front 13

Atoms that have trigonal planar electron arrangement will always be "" hybridized.

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Atoms that have trigonal planar electron arrangement will always be sp2 hybridized.

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Atoms that have tetrahedral electron arrangement will always have "" hybridization.

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Atoms that have tetrahedral electron arrangement will always have sp3 hybridization.

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sp3 hybridization is formed by using 1 "" orbital and 3 "" orbitals. Thus, all "" orbitals are used up which means that "" hybridized atoms cannot form "" bonds.

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sp3 hybridization is formed by using 1 s orbital and 3 p orbitals. Thus, all p orbitals are used up which means that sp3 hybridized atoms cannot form π bonds.

Front 16

The Lone Pair of Electrons of an atoms are included in the "" of the atom. However, they are not included in the "" of the atom.

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The Lone Pairs of electrons of an atom are included in the Electronic Arrangement of the atom. However, they are not included in the Geometric Arrangement of the atom.

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In sp and sp2 hybridized atoms, lone pairs can be found in the "" orbital.

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In sp and sp2 hybridized atoms, lone pairs can be found in p orbitals.

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In sp3 orbitals, lone pairs of electrons cannot be found in "" orbitals.

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In so3 orbitals, lone pairs of electrons cannot be found in the p orbital.

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Steric Number is the...

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Steric Number is the sum of the number of sigma bonds and number of lone electron pairs.

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If an atom has a Steric Number of 4, then it always has a "" arrangement.

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If an atom has a Steric Number of 4, then it always has a tetrahedral arrangement.

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If an atom has a Steric Number of 3, then it always has a "" arrangement.

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If an atom has a Steric Number of 3, then it always has a trigonal planar arrangement.

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If an atom has a Steric Number of 2, then it always has a "" arrangement.

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If an atom has a Steric Number of 2, then it always has a linear arrangement.

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only ""bonds and "" of an atom are found in hybridized orbitals.

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only sigma bonds and long pairs an atom are found in hybridized orbitals.

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"" bonds are found in p orbitals.

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pi bonds are found in p orbitals.