01 CHƯƠNG 7. CROM, SẮT, ĐỒNG- CÔ MƠ HÓA
Quiz
•
Chemistry
•
12th Grade
•
Medium
CÔ MƠ HÓA
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48 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Nguyên tố nào sau đây là kim loại chuyển tiếp (kim loại nhóm B)?
Na.
Al.
Cr.
Ca.
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Kim loại X là kim loại cứng nhất, được sử dụng để mạ các dụng cụ kim loại, chế tạo các loại thép chống gỉ, không gỉ… Kim loại X là
Fe.
Ag.
Cr.
W.
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Cấu hính electron nào sau đây là của Fe3+ ?
[Ar]3d6.
[Ar]3d5.
[Ar]3d4.
[Ar]3d3.
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Cấu hình electron nào sau đây là của Fe ?
[Ar]3d6.
[Ar]3d64s2.
[Ar]4s23d6.
[Ar]3d74s1.
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Fe có số thứ tự là 26. Cấu hình electron của Fe2+ là
s22s22p63s23p63d5
1s22s22p63s23p63d6.
1s22s22p63s23p64s23d3
2s22s22p63s23p63d64s2.
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Crom có số hiệu nguyên tử là 24. Cấu hình electron của ion Cr2+ là
. [Ar]3d5.
[Ar]3d4.
. [Ar]3d3.
[Ar]3d2.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
. Crom có số hiệu nguyên tử là 24. Cấu hình electron của ion Cr3+ là
[Ar]3d5.
[Ar]3d4.
[Ar]3d3.
[Ar]3d2.
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