
SOAL SUMATIF STRUKTUR ATOM
Authored by Salmah Salmah
Chemistry
11th Grade
Used 8+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Suatu senyawa terdiri dari 20% massa Mg, 26,67 massa S dan 53,33 massa O. Rumus Empiris senyawa tersebut adalah....
MgSO4
MgSO3
MgSO2
MgSO
Mg2SO
2.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Suatu Senyawa memiliki rumus empiris C2H5 dengan Mr = 58. Rumus molekul senyawa tersebut adalah ...
( Ar c = 12 ; Ar = 1 )
C2H5
C4H10
C3H8
C3H8
C2H6
3.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Ke dalam air dilarutkan 3,6 gram MgSO4 sampai volume larutan menjadi 250 mL. Molaritas larutan yang terjadi adalah .....
0,30 M
0,25 M
0,20 M
0,15 M
0,12 M
4.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Molalitas larutan yang terbuat dari 2 gram kristal NaOH yang dilarutkan dalam 500 gram air adalah... ( Mr NaOH = 40 )
0,5 m
0,4 m
0,3 m
0,2 m
0,1 m
5.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Konfigurasi elektron atom natrium (Na) dengan nomor atom 11 adalah:
1s2 2s2 2p6 3s2 3p3
1s2 2s2 2p6 3s2 3p2
1s2 2s2 2p6 3s1
1s2 2s2 2p6 3s2
1s2 2s2 2p6 3s2 3p1
6.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Konfigurasi elektron atom Mg2+ dengan nomor atom 12 adalah:
1s2 2s2 2p6 3s2 3p3
1s2 2s2 2p6 3s2 3p1
1s2 2s2 2p6 3s2
1s2 2s2 2p6
1s2 2s2 2p6 3s1
7.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Jumlah elektron dari suatu atom yang ke empat bilangan kuantum elektron terakhirnya n = 2, l =1, m = 0, s= -½ adalah…
9
8
7
6
5
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