
de on so 3 hk2 khoi 12
Quiz
•
Chemistry
•
9th - 12th Grade
•
Practice Problem
•
Easy
Quốc Trần
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40 questions
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1.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Ở trạng thái cơ bản, cấu hình electron lớp ngoài cùng của nguyên tử K (Z = 19) là
4s1
3s1
2s1
3d1
2.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Phản ứng đặc trưng của kim loại kiềm là:
3.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Trong hợp chất, kim loại kiềm thổ có số oxi hóa là
0
+1
+2
+3
4.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Vị trí của Al trong bảng tuần hoàn là:
5.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Quặng manhetit có công thức là:
Fe2O3
FeCO3
FeS2
Fe3O4
6.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Chất nào saụ đây không có tính lưỡng tính ?
Cr(OH)2
Cr2O3
Al(OH)3
Al2O3
7.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Người ta nhận biết ion Al3+ bằng
dd NaOH
quỳ tím
nước
H2SO4
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