
12A1_Y2324_KIM LOẠI KIỀM THỔ VÀ HỢP CHẤT
Chemistry
12th Grade
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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
1.
2.
3.
4.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Công thức chung của oxit kim loại thuộc nhóm IIA là
R2O3.
RO2.
R2O.
RO.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cấu hình electron của nguyên tử Mg (Z=12) là
1s22s22p63s2.
1s22s22p6.
1s22s22p63s1.
1s22s22p63s23p1.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cấu hình electron lớp ngoài cùng của các nguyên tử kim loại kiềm thổ là
ns1.
ns2.
ns2np3.
ns2np1.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hai kim loại đều thuộc nhóm IIA trong bảng tuần hoàn là
K, Sr.
Na, K.
Be, Al.
Ca, Ba.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kim loại nào sau đây là kim loại kiềm thổ?
Ca.
Cr.
Fe.
Al.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong hợp chất, kim loại kiềm thổ có số oxi hóa là
+1.
+2.
+3.
+4.
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