NHÓM IIIA
Authored by Duc Nghia ..
Science
University
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100 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
nguyên tố Bo tạo liên kết
hydro
cộng hoá trị
ion
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
từ al tới ga tính kim loại
tăng
giảm
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
nhóm IIIA tạo ra các ion
-1
0
+1
+2
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
trạng thái tự nhiên của borum
tự do
khoáng vật borac
xaxolin
dung dịch
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
công thức của borac
Na2B4O7.10H2O
Na2B4O7.11H2O
Na2B3O7.10H2O
Na2B4O8.10H2O
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
công thức của xaxolin
H3BO3
H2BO3
H3BO4
HBO3
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
điều chế B
nhiệt luyện
thuỷ luyện
điện phân dung dịch
điện phân nóng chảy
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