Struktur Atom
Chemistry
12th Grade
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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
jumlah proton, elektron, dan neutron 15P31 pada atom berturut-turut adalah...
16, 15, dan 16
15, 16, dan 16
15, 15, dan 16
15, 16, dan 15
16, 16, dan 15
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Ion 54Mn254+ memiliki....
25 proton di kulit atom
25 elektron di inti atom
21 proton di inti atom
21 elektron di kulit atom
29 neutron di kulit atom
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
ion X2+ mempunyai 10 elektron dan 13 neutron. Nomor massa atom X adalah....
23
25
12
8
10
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
ion A5- tersusun atas 18 partikel yang ada di sekeliling inti atom dan 15 partikel yang memiliki sifat radiasi dengan daya tembus yang besar. Nomor massa atom A adalah...
30
15
33
36
18
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
suatu ion X tersusun atas 18 partikel yang dihasilkan dari percobaan sinar katoda, 20 partikel yang dihasilkan dari percobaan sinar anoda, dan 22 partikel yang dihasilkan dari percobaan penembakan atom berilium dengan sinar alfa. Pernyataan berikut ini yang tepat adalah....
nomor atom X adalah 20
muatan atom X adalah -2
muatan ion X adalah +4
nomor atom X adalah 18
nomor massa X adalah 40
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Berikut ini adalah beberapa senyawa kovalen.
(1) CH4
(2) NH3
(3) PCl5
(4) PCl3
(5) CO2
(Nomor atom: C = ; H = ; N = ; P = ; Cℓ = ; O = )
Senyawa kovalen yang mengalami penyimpangan kaidah oktet dalam struktur Lewisnya adalah ....
UN KIMIA 2013/2014
(5)
(!)
(3)
(2)
(4)
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Perhatikan tabel sistem periodik berikut.
Konfigurasi elektron unsur Q yang paling sesuai adalah ....
UN KIMIA 2011/2012
1s2 2s2 2p6 3s2 3p6
1s2 2s2 2p6 3s2 3p5
1s2 2s2 2p6 3s2 3p6 3d2
1s2 2s2 2p6 3s2 3p6 4s2
1s2 2s2 2p6 3s2 3p4
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