Nguyên tố A có cấu hình electron 1s22s2. Số proton trong hạt nhân của A là
Cấu hình electron nguyên tử

Quiz
•
Chemistry
•
10th - 12th Grade
•
Hard
Yến Nguyễn
Used 8+ times
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17 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
4
1
3
5
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Nguyên tử nguyên tố A có cấu hình electron là 1s22s22p63s23p5. A là
K ( Z=19)
F ( Z=9)
Cl ( Z=17)
Na ( Z=11)
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Sự so sánh các phân mức năng lượng tăng dần nào sau đây sai?
1s<2s
2p<3s
1s<2s<2p
2p<2s
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Cấu hình electron nào sau đây sai?
1s22s32p2
1s22s22p4
1s22s22p63s1
1s22s22p63s23p5
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Ion âm được hình thành khi nguyên tử:
Cho proton
Nhận electron
Cho nơtron
Cho electron
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Để hình thành ion Ca2+, nguyên tử Ca:
Nhận 2 electron
Nhận 2 proton
Cho 2 proton
Cho 2 electron
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Cấu hình electron của Cl- (Z=17) là:
1s22s22p63s23p64s2
1s22s22p63s23p6
1s22s22p63s23p5
1s22s22p63s23p1
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