Exam (elaborations)
ACS Chemistry Final Exam
ACS Chemistry Final Exam
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ACS Chemistry Final ExamLayouti ofi ani elementi (massi #i &i atomici #)i
atomici numberi =i -i Correcti Answer-#i ofi protons
massi numberi =i -i Correcti Answer-#i ofi protonsi +i neutrons
thei numberi ofi protonsi ini ai neutrali atomi willi equali thei -i Correcti Answer-
#i ofi electrons
howi toi findi thei correcti numberi ofi neutronsi -i Correcti Answer-massi numberi
-i atomici number
Formsi ofi thei samei elementsi thati differi ini amounti ofi neutronsi -i Correcti
Answer-isotopes
Whati particle,i ifi losti fromi thei nucleus,i wouldi NOTi causei ai changei ini thei
atomici number?i -i Correcti Answer-ai neutroni becausei iti hasi noi charge
Wheni alphai particlesi werei shoti ati ai metali foili target,i mosti passedi throughi
withouti deflections,i whilei othersi deflectedi ati largei angles.i Whati didi thisi
suggesti toi Rutherford?i -i Correcti Answer-thati thei atomsi ofi thei metali werei
mostlyi emptyi space,i whilei thei nucleusi consistedi ofi mosti ofi thei massi
whichi includedi highlyi condensedi positivei particlesi (whichi causedi thei
deflection).
,Ani atomi hasi ai valencei shelli configurationi ofi 1s1.i Toi whichi groupi ofi
elementsi oni thei periodici tablei doesi iti belong?i -i Correcti Answer-IA
alkalii metals
electromagnetici spectrumi -i Correcti Answer-
Thei greateri thei wavelengthi ofi ai photon..?i -i Correcti Answer-thei loweri itsi
frequency
Thei greateri thei frequencyi ofi ai photon...?i -i Correcti Answer-thei shorteri itsi
wavelength
Lighti energyi formulai -i Correcti Answer-
Whati doesi Ci ini thei lighti energyi formulai represent?i -i Correcti Answer-
Givei thei ground-statei electroni configurationi ofi ani atomi ini thei secondi
periodi -i Correcti Answer-1s2i 2s1
Electronsi configurationi rulei thati statesi electronsi doi noti pairi untili theyi havei
to.i (puti onei electronsi ini eachi electroni domaini theni pairi up)i -i Correcti
Answer-Hund'si rule
Ani experimentali phenomenai associatedi withi atomsi havingi unpairedi
electronsi -i whichi statesi suchi substancesi arei attractedi toi magnetici fieldsi -i
Correcti Answer-Paramagnetism
, Whichi dropi ini energyi leveli resultsi ini thei greatesti emissioni ofi energy?i -i
Correcti Answer-n=2i toi n=1
quantumi numbersi -i Correcti Answer-
Whati doi thei 4i quantumi numbersi standi for?i -i Correcti Answer-ni =i energyi
level
li =i (n-1)
mli -li toi l
mni 1/2i ori -1/2i (spin)
Listi thei quantumi numbersi fori thei s,i p,i d,i andi fi orbitalsi -i Correcti Answer-
si 1,0,0i
pi 2,i 1,i -1-0-1
di 3,i 2,i -2--1-0-1-2
fi 4,i 3i -3--2--1-0-1-2-3
Pyi orbitali -i Correcti Answer-
Whichi elementi isi representedi byi Xi -i Correcti Answer-Chromium
Whati twoi subatomici particlesi havei thei mosti mass,i buti occupyi veryi littlei
ofi thei volumei ofi ani atomi -i Correcti Answer-protonsi andi neutrons
Definei Isoelectronici -i Correcti Answer-Havingi thei samei amounti ofi electrons
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