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| 1 | |
The lone pair of electrons on sulfur in SO2 is in |
| | A) | a p orbital. |
| | B) | an s orbital. |
| | C) | an sp2 hybrid orbital. |
| | D) | an sp3 hybrid orbital. |
| | E) | none of the above orbital types. |
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| 2 | |
Which of the following molecules has sp3 hybridization and a dipole moment? |
| | A) | SiH4 |
| | B) | BF3 |
| | C) | NH3 |
| | D) | BrF3 |
| | E) | PCl5 |
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| 3 | |
Which of the following hybridization patterns is associated with trigonal bipyramidal geometry? |
| | A) | sp2 |
| | B) | sp3 |
| | C) | sp3d2 |
| | D) | sp3d |
| | E) | sp |
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| 4 | |
Which of the following hybridization patterns best describes the central atom in H2CF2? |
| | A) | sp2 |
| | B) | sp3d |
| | C) | sp3 |
| | D) | sp |
| | E) | sp3d2 |
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| 5 | |
How many  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0073402699/37547/pi.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]> bonds are present in a molecule of ethyne (acetylene), C2H2? |
| | A) | 3 |
| | B) | 2 |
| | C) | 1 |
| | D) | 0 |
| | E) | none of the above |
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| 6 | |
Which of the following hybridization patterns best describes the carbon atom in NCO-? |
| | A) | sp2 |
| | B) | sp3d |
| | C) | sp3 |
| | D) | sp |
| | E) | sp3d2 |
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| 7 | |
A carbon-carbon double bond consists of |
| | A) | a  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0073402699/37547/sigma.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]> bond and two <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0073402699/37547/pi.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]> bonds. |
| | B) | a <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0073402699/37547/pi.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]> bond and two <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0073402699/37547/sigma.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]> bonds. |
| | C) | two <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0073402699/37547/sigma.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]> bonds. |
| | D) | two <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0073402699/37547/pi.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]> bonds. |
| | E) | a <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0073402699/37547/sigma.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]> bond and a <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0073402699/37547/pi.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]> bond. |
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| 8 | |
What type orbital holds the lone pair of electrons on nitrogen in H2CNH? |
| | A) | 2s |
| | B) | 2px |
| | C) | sp |
| | D) | sp2 |
| | E) | sp3 |
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| 9 | |
In a carbon-carbon triple bond, what is the nature of the bonding between the carbons? |
| | A) | two 2s orbitals overlapping |
| | B) | two 2p orbitals overlapping |
| | C) | two sp orbitals overlapping, two 2py overlapping and two 2pz overlapping |
| | D) | an sp and sp2 overlapping and 2p orbitals overlapping |
| | E) | an sp2 and sp2 overlapping and 2p orbitals overlapping |
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| 10 | |
Which type of hybrid orbital on carbon is associated with bonds having restricted rotation? |
| | A) | sp |
| | B) | sp2 |
| | C) | sp3 |
| | D) | sp3d |
| | E) | sp3d2 |
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| 11 | |
When the nitrogen molecule, N2, loses an electron, |
| | A) | the ion formed will be less stable than N2. |
| | B) | the ion formed will be more stable than N2. |
| | C) | the stability of the ion formed will be the same as that of N2. |
| | D) | the bond length of ion will be shorter than the bond length of N2. |
| | E) | none of the above statements is correct. |
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| 12 | |
According to the molecular orbital model, which is the least stable? |
| | A) | He2 |
| | B) | Li2 |
| | C) | B2 |
| | D) | C2 |
| | E) | NO |
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| 13 | |
According to molecular orbital theory, what is the bond order in F2+? |
| | A) | 1 |
| | B) | 1.5 |
| | C) | 2 |
| | D) | 2.5 |
| | E) | 3.0 |
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| 14 | |
According to the molecular orbital model, the highest occupied molecular orbital of O2 is |
| | A) | <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0073402699/37547/sigma.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]>2s |
| | B) | <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0073402699/37547/pi.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]>2p |
| | C) | <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0073402699/37547/sigma.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]> *2s |
| | D) | <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0073402699/37547/pi.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]> *2p |
| | E) | <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0073402699/37547/sigma.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]> *2p |
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| 15 | |
Consider benzene (C6H6), carbonate ion (CO32-) and water (H2O). Of these three species, which
one(s) has/have delocalized molecular orbitals? |
| | A) | only benzene |
| | B) | only carbonate |
| | C) | only water |
| | D) | benzene and water |
| | E) | benzene and carbonate |
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