Củng cố đề cương HKI K10(23-24)
Quiz
•
Chemistry
•
10th Grade
•
Practice Problem
•
Easy
c3 Minh Ha GV Hoa Vu Thi Bich Hoa
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73 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Số hiệu nguyên tử của nito là 7. Trong nguyên tử nito, số electron ở phân mức năng lượng cao nhất là
A. 3.
B. 5.
C. 2.
D. 7
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Một nguyên tử có cấu hình electron lớp ngoài cùng là 4s1. Nguyên tử đó thuộc về các nguyên tố hoá học nào sau đây?
A. K, Ca, Cu
B. Cu, Cr, K
C. Kr, K, Ca
D. Cu, Mg, K
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Một nguyên tử X có số hiệu nguyên tử Z = 19. Số lớp electron trong nguyên tử X là
A. 6.
B. 4.
C. 3.
D. 5.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong những hợp chất sau đây, cặp chất nào không phải đồng vị:
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho 63Cu, 65Cu và 16O, 17O, 18O. Số phân tử Cu2O tạo thành là
A. 6.
B. 12.
C. 9.
D. 10.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nguyên tử fluorine có 9 proton, 9 electron và 10 neutron. Số khối của nguyên tử fluorine là:
A. 9.
B. 10.
C. 19.
D. 28
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong nguyên tử, hạt mang điện là
A. electron
B. electron và neutron
C. proton và neutron
D. proton và electron
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