
原子結構、元素、化合物和混合物 (前測)
Authored by Vikki Hui
Science
9th Grade
Used 5+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列哪種元素很可能會形成陰離子?
A. 鈣
B. 氦
C. 鐵
D. 氧
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
X是一種元素;X2+離子的電子排佈是2,8,8。X是?
A. 氬
B. 硫
C. 鈣
D. 氧
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
第I族金屬形成的離子,帶有什麼的電荷?
A. 0
B. +1
C. +2
D. -1
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
以下哪個是鐵的元素符號?
Au
Fe
Mg
Cu
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Na 原子的電子排佈是 __________。
2,1
2,8,1
2,8,8,1
2,8,9
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
原子在整體上不帶電荷,因為
A. 原子內的質子數目與中子數目相等。
B. 原子內的中子數目與電子數目相等。
C. 原子內的質子數目與電子數目相等。
D. 原子的原子序相等於質子的數目。
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
某原子含有19個質子、20個中子和19個電子,該原子的原子序是多少?
A. 19
B. 20
C. 38
D. 39
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