ACS CHEMISTRY FINAL EXAM WITH THE CORRECT ANSWERS

ACS CHEMISTRY FINAL
EXAM WITH THE
CORRECT ANSWERS




Layoutvofvanvelementv(massv#v&vatomicv#)v-vcorrectvanswer-

atomicvnumberv=v-vcorrectvanswer-#vofvprotons

massvnumberv=v-vcorrectvanswer-#vofvprotonsv+vneutrons

thevnumbervofvprotonsvinvavneutralvatomvwillvequalvthev-vcorrectvanswer-
#vofvelectrons

howvtovfindvthevcorrectvnumbervofvneutronsv-vcorrectvanswer-massvnumberv-
vatomicvnumber


Formsvofvthevsamevelementsvthatvdiffervinvamountvofvneutronsv-vcorrectvanswer-
isotopes

Whatvparticle,vifvlostvfromvthevnucleus,vwouldvNOTvcausevavchangevinvthevatomicvnu
mber?v-vcorrectvanswer-avneutronvbecausevitvhasvnovcharge

Whenvalphavparticlesvwerevshotvatvavmetalvfoilvtarget,vmostvpassedvthroughvwithoutv
deflections,vwhilevothersvdeflectedvatvlargevangles.vWhatvdidvthisvsuggestvtovRutherf

, ord?v-vcorrectvanswer-
thatvthevatomsvofvthevmetalvwerevmostlyvemptyvspace,vwhilevthevnucleusvconsistedv
ofvmostvofvthevmassvwhichvincludedvhighlyvcondensedvpositivevparticlesv(whichvcaus
edvthevdeflection).

Anvatomvhasvavvalencevshellvconfigurationvofv1s1.vTovwhichvgroupvofvelementsvonvt
hevperiodicvtablevdoesvitvbelong?v-vcorrectvanswer-IA
alkalivmetals

electromagneticvspectrumv-vcorrectvanswer-

Thevgreatervthevwavelengthvofvavphoton..?v-vcorrectvanswer-thevlowervitsvfrequency

Thevgreatervthevfrequencyvofvavphoton...?v-vcorrectvanswer-
thevshortervitsvwavelength

Lightvenergyvformulav-vcorrectvanswer-

WhatvdoesvCvinvthevlightvenergyvformulavrepresent?v-vcorrectvanswer-

Givevthevground-statevelectronvconfigurationvofvanvatomvinvthevsecondvperiodv-
vcorrectvanswer-1s2v2s1


Electronsvconfigurationvrulevthatvstatesvelectronsvdovnotvpairvuntilvtheyvhavevto.v(putv
onevelectronsvinveachvelectronvdomainvthenvpairvup)v-vcorrectvanswer-Hund'svrule

Anvexperimentalvphenomenavassociatedvwithvatomsvhavingvunpairedvelectronsv-
vwhichvstatesvsuchvsubstancesvarevattractedvtovmagneticvfieldsv-vcorrectvanswer-
Paramagnetism

Whichvdropvinvenergyvlevelvresultsvinvthevgreatestvemissionvofvenergy?v-
vcorrectvanswer-n=2vtovn=1


quantumvnumbersv-vcorrectvanswer-

Whatvdovthev4vquantumvnumbersvstandvfor?v-vcorrectvanswer-nv=venergyvlevel
lv=v(n-1)
mlv-lvtovl
mnv1/2vorv-1/2v(spin)

Listvthevquantumvnumbersvforvthevs,vp,vd,vandvfvorbitalsv-vcorrectvanswer-sv1,0,0v
pv2,v1,v-1-0-1
dv3,v2,v-2--1-0-1-2
fv4,v3v-3--2--1-0-1-2-3

Pyvorbitalv-vcorrectvanswer-

WhichvelementvisvrepresentedvbyvXv-vcorrectvanswer-Chromium