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Pre$AP&Chemistry&11&
Atomic&Theory&Practice&Test&Name:&Date:&Block:&
!Multiple&Choice.&&!________!1.!If!two!atoms!of!Ca!have!different!number!of!electrons,!but!the!same!number!of!protons!and!neutrons,!which!property(ies)!would!be!significantly!different?!
A. Mass!B. Charge!C. Both!A!&!B!
!________!2.!If!two!atoms!of!Na!have!different!number!of!neutrons,!but!the!same!number!of!protons!and!electrons,!which!property(ies)!would!be!significantly!different?!
A. Mass!B. Charge!C. Both!A!&!B!
!________!3.!Which!of!the!following!ions!will!NOT!have!the!same!electron!configuration!as!Ne?!
A. Na!B. Al3+!C. Ar!D. O2L!
!________!4.!Which!element!has!a!partiallyLfilled!f!subshell?!
A. Ba!B. Eu!C. Re!D. Bi!
!________!5.!What!is!the!electron!configuration!of!the!Co3+!ion?!!
A. 1s2!2s22p6!3s23p63d6!B. 1s2!2s22p6!3s23p63d4!4s2!C. 1s2!2s22p6!3s23p63d5!4s1!D. 1s2!2s22p6!3s23p63d7!4s2!!
!________!6.!Based!on!its!electron!configuration,!the!element!that!is!most!similar!in!chemical!properties!to!selenium!is:!
A. As!B. Cl!C. Sb!D. Te!
________!7.!Which!of!these!electron!diagrams!could!represent!the!ground!state!of!the!p!valence!electrons!of!carbon?!!!
!!
8.!Explain!your!answer!to!the!question!above:!!!!!!!________!9.!Which!atom!or!ion!has!the!following!electron!arrangement?!!
1s2!2s2!2p6!3s2!3p6!4s13d10!A. Cu!B. Cu2+!C. Zn!D. Zn2+!
!________!10.!Which!of!the!following!best!explains!the!relative!positioning!and!intensity!of!the!2s!peaks!in!the!following!spectra?!!
!!!!!!!!!!!
A. Be!has!a!greater!nuclear!charge!than!Li!and!more!electrons!in!the!2s!orbital.!
B. Be!electrons!experience!greater!electronLelectron!repulsions!than!Li!electrons.!
C. Li!has!a!greater!pull!from!the!nucleus!on!the!2s!electrons!,so!they!are!harder!to!remove.!
D. Li!has!greater!electron!shielding!by!the!1s!orbital,!so!the!2s!electrons!are!easier!to!remove.!
!!
________!11.!The!PES!for!lithium,!Li,!is!shown!below.!
!Which!of!the!following!correctly!identifies!and!explains!the!peak!on!the!right?!
A. The!peak!to!the!right!represents!electrons!in!the!1s!orbital!because!electrons!in!lower!energy!shells!have!shorter!peaks.!
B. The!peak!to!the!right!represents!electrons!in!the!1s!orbital!because!electrons!in!lower!energy!levels!are!closer!to!and!more!attracted!to!the!nucleus.!
C. The!right!peak!represents!electrons!in!the!2s!orbital!because!electrons!in!high!energy!shells!have!shorter!peaks.!
D. The!right!peak!represents!electrons!in!the!2s!orbital!because!electrons!in!higher!energy!shells!are!further!away!from!and!less!attracted!to!the!nucleus.!!
!________!12.!Elements!in!the!alkaline!earth!family!would!have!the!following!Lewis!structure:!
!A.! B.! C.! D.!
!!________!13.!Which!of!the!following!has!no!lone!pairs!around!the!central!atom?!
A. CF4!B. SF4!C. BrF5!D. PCl3!
!!________!14.!Which!of!the!following!most!easily!loses!one!valence!electron?!
A. Potassium!B. Beryllium!C. Iron!D. Bromine!
!15.!Explain!your!answer!to!the!question!above:!!!!!
!________!16.!Which!of!the!following!would!have!the!largest!atomic!radius?!
A. Seaborgium!B. Einsteinium!C. Indium!D. Thallium!
!17.!Draw!the!Lewis!diagram!for!ammonia,!NH3.!!!!!!!!________!18.!Ammonia,!NH3,!has!the!following!hybridization:!!
A. sp!B. sp2!C. sp3!D. s2p3!
!!________!19.!What!is!the!formal!charge!of!the!central!atom!of!ammonia:!!
A. L2!B. L1!C. 0!D. +1!E. Cannot!be!determined!
!!________!20.!The!bond!between!the!nitrogen!and!hydrogen!in!ammonia!would!be!considered:!
A. NonLpolar!covalent!B. Polar!covalent!C. Ionic!D. Valence!
!!________!21.!How!many!sigma!and!pi!bonds!does!ammonia!contain?!
A. 1!sigma,!2!pi!B. 2!sigma,!1!pi!C. 2!sigma,!2!pi!D. 3!sigma,!0!pi!
Short&Answer.&
1. The&following&mixture&of&isotopes&of&silver&are&found&in&nature.&&Calculate&the&expected&atomic&mass&of&silver.&&&
107Ag&=&51.8%,&109Ag&=&48.2%&&&&&&&
&
&2. Fill&in&the&following&table&by&writing&the&full&electron&configuration&for:&&&&&&&
&Element& Full&Electron&Configuration&
&&Ge&&
&&&
&&
Ge2+&&
&&&
&&3. Show&the&core¬ation&orbital&diagram&and&determine&the&number&of&valence&electrons.&
&Element& Core&Notation&Orbital&Diagram&& #&Valence&Electrons&
Ru3+&&
&&&
&
&Sulphur&
&
&&&
&
&&
4. Identify&the&neutral&atoms&that&have&the&following&electron&configurations:&&&&
a.&1s22s22p2&_______________& b.&1s22s22p4&_______________&& c.&1s22s22p63s23p2&_______________& &&&d.&[Xe]&6s2&4f2&______________& e.&[Kr]&5s1&_________________&& &f.&[Ar]&4s2&3d8_______________&&
& &
5. Consider&the&PES&diagram&below:&
&a. What&element&does&this&PES&represent?&Include&a&full&electron&configuration&in&your&answer.&&
&&&&&
b. On&the&graph&above,&sketch&and&label&a&PES&for&the&element&sulfur.&Explain&your&reasoning&below.&&&&&&&&&6. Select&each&of&the&following:&&
a. Smaller&radius:& & & & O& or&& O2−&
&
b. Larger&radius:& & & & Se2−&& or& Kr&
&
c. Higher&second&ionization&energy:& & Na& or& Mg&
&
d. Lower&electronegativity:& & & Sn& or& Pb&&
e. Smaller&radius:& & & & Na+&& or&& Mg2+&&
f. Lower&ionization&energy:&& & Mg& or& K&&
g. Smaller&radius:& & & & Sr& or& Sr2+&&
h. Higher&electronegativity:&& & Se& or& Te&
&
i. Lower&ionization&energy:&& & Be+& or& Be2+&
&
j. Larger&radius:& & & & Zn& or& Ag&
& &
&&7. Complete&the&following&table:&&&Molecule& Lewis&Diagram& VSEPR&Notation&
(AXE)&&&Shape&Name&VSEPR&Drawing&
SF6& & & &
&
&
& &
& & AX3&&Trigonal&Planar&
&
& & &
&&& &
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