Lý thuyết Hóa số 2
Authored by Lê Việt
Chemistry
KG
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40 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Số electron lớp ngoài cùng của các nguyên tử kim loại thuộc nhóm IIA là
3
4
2
1
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Số electron lớp ngoài cùng của các nguyên tử kim loại thuộc nhóm IA là
1
2
4
5
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Công thức chung của oxit kim loại thuộc nhóm IA là
R2O3.
RO2.
R2O.
RO.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cấu hình electron của nguyên tử Na (Z =11) là
1s2 2s2 2p6 3s2
B. 1s2 2s2 2p6
1s2 2s2 2p6 3s1
1s2 2s2 2p6 3s2 3p1
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hai kim loại đều thuộc nhóm IA trong bảng tuần hoàn là
Sr, K.
Na, K.
Be, Al.
Ca, Ba.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nguyên tử Fe có Z = 26, cấu hình e của Fe là
[Ar ] 3d6 4s2
[Ar ] 4s13d7
[Ar ] 3d7 4s1
[Ar ] 4s23d6
.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cation M+ có cấu hình electron lớp ngoài cùng 2s2 2p6
là
Rb+
Na+
Li+
K+
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