
Ôn tập
Authored by Xtxctgjb Thúy
Chemistry
Professional Development
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11 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • Ungraded
Cấu hình electron lớp ngoài cùng của nguyên tử Na(Z=11)
3s2
3s1
4s1
3s23p1
2.
MULTIPLE CHOICE QUESTION
30 sec • Ungraded
Canxi hiđroxit(Ca(OH)2) còn gọi là
Thạch khan cao
Đá vôi
Thạch cao sống
Vôi tôi
3.
MULTIPLE CHOICE QUESTION
30 sec • Ungraded
Để làm nước mềm có tính cứng vĩnh cữu, ta dùng dung dịch
Ca(No3)3
Nacl
Hcl
Na2co3
4.
MULTIPLE CHOICE QUESTION
30 sec • Ungraded
Công thức hóa học của nhôm oxit
Al(NO3)3
Al203
Al(OH)3
AlCl3
5.
MULTIPLE CHOICE QUESTION
30 sec • Ungraded
Chu kì của sắt trong bảng tuần hoàn
Chu kì 3, nhóm IIB
Chu kì 4, nhóm VIIIB
Chu kì 4, nhóm IIB
Chu kì 3, nhóm VIIIB
6.
MULTIPLE CHOICE QUESTION
30 sec • Ungraded
Kim loại Fe không phản ứng với dung dịch
Cl
Agno3
Cuso4
Nano3
7.
MULTIPLE CHOICE QUESTION
30 sec • Ungraded
Quặng sắt manhetit có thành phần chính là
FeS2
Fe2O3
Fe3O4
FeCO3
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