IKATAN KIMIA
Quiz
•
Chemistry
•
11th Grade
•
Practice Problem
•
Medium
Era Restiani
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Atom unsur berikut yang akan melepaskan satu elekton untuk mencapai kestabilan adalah . . .
13Al
20Ca
17Cl
16S
19K
2.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Suatu unsur mempunyai konfigurasi elektron: 2.8.8.2. Pernyataan yang tidak benar tentang unsur tersebut adalah . . .
Mempunyai unsur yang stabil karena mempunyai 2 elektron valensi (duplet)
Merupakan unsur yang tidak stabil karena konfigurasinya tidak sesuai dengan gas mulia
Untuk menjadi stabil, unsur tersebut akan melepaskan 2 elektron valensinya
Dalam mencapai kestabilan, unsur tersebut akan membentuk ion dengan muatan +2
Agar stabil, unsur tersebut akan menyesuaikan konfigurasi elektron atom argon
3.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Unsur berikut yang stabil adalah . . .
H
He
Al
Ag
Na
4.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Alumunium memiliki nomor atom 13. Dalam konfigurasi oktetnya, alumunium cenderung . . .
Menerima 3 elektron
Menerima 5 elektron
Melepas 3 elektron
Melepas 5 elektron
Menerima 2 elektron
5.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Unsur Y dengan konfigurasi elektron 2.8.7 membentuk senyawa kovalen dengan rumus 6X. Rumus senyawa yang terbentuk adalah . . .
XY
X2Y
XY2
XY3
XY4
6.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Diketahui skala keelektronegatifan unsur H = 2,1; O = 2,5; I = 2,6; N = 3,0; dan Cl = 3,5. Molekul berikut yang bersifat paling polar adalah . . .
NH3
H2O
HI
HCl
H2
7.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Atom 6C dan atom 8O jika membentuk molekul dengan ikatan kovalen akan menggunakan pasangan elektron bersama sebanyak . . . pasang.
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