UJIAN SEMESTER KIMIA KELAS X
Quiz
•
Chemistry
•
10th Grade
•
Practice Problem
•
Hard
NaNa Nasra
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13 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Beberapa pernyataan mengenai teori atom sebagai berikut.
1) Tidak dapat menentukan kedudukan electron secara pasti, melainkan kebolehjadian ditemukannya electron
2) Tidak dapat menerangkan alasan electron tidak jatuh ke dalam inti
3) Tidak mampu menjelaskan spectrum atom berelektron banyak
4) Tidak mampu menjelaskan terjadinya spectrum garis atom hydrogen
5) Tidak dapat menjelaskan susunan muatan positif dan negatif pada atom
Kelemahan teori atom Rutherford ditunjukkan oleh angka…
1 dan 2
2 dan 3
2 dan 4
3 dan 4
4 dan 5
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Atom suatu unsur mempunyai konfigurasi electron 2 8 18 1. Bilangan kuantum electron terakhir dari atom tersebut adalah…
n = 4; l = 0; m = 0; s = +1/2
n = 4; l =0; m = 0; s = -1/2
n = 3; l = 2; m = +2; s = +1/2
n = 3; l = 2; m = +2; s = -1/2
n = 3; l = 2; m = -2; s = +1/2
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Elektron terakhir suatu unsur mempunyai bilangan kuantum n = 3; l = 1; m = 0; s = +1/2. Salah satu isotop unsur itu mempunyai neutron = 15. Nomor massa isotop tersebut adalah…
23
25
27
29
31
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Diketahui nomor atom Fe = 26, konfigurasi elektron ion Fe3+ adalah…
1s2 2s2 2p6 3s2 3p6 4s2 3d6
1s2 2s2 2p6 3s2 3p6 3d5
1s2 2s2 2p6 3s2 3p6 4s2 3d3
1s2 2s2 2p6 3s2 3p6 4s1 3d4
1s2 2s2 2p6 3s2 3p6 3d6
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Unsur X dengan nomor atom 27, dalam sistem periodik terletak pada …
Golongan IIA, periode 4
Golongan VIIA, periode 3
Golongan VIIB, periode 4
Golongan VIIIB, periode 4
Golongan VIIIB, periode 5
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Konfigurasi elektron X3- adalah 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6. Dalam sistem periodic, unsur X terletak pada…
Periode 4, golongan IIIA
Periode 4, golongan VA
Periode 4, golongan VIIIA
Periode 5, golongan VIA
Periode 5, golongan VIB
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
14 proton, 14 elektron, dan 14 neutron
14 proton, 14 elektron, dan 28 neutron
14 proton, 28 elektron, dan 28 neutron
28 proton, 14 elektron, dan 14 neutron
28 proton, 28 elektron, dan 14 neutron
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