2022初三第二段化學考試複習
Quiz
•
Chemistry
•
9th Grade
•
Practice Problem
•
Hard
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10 questions
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1.
MULTIPLE SELECT QUESTION
1 min • 1 pt
金屬元素原子最外層電子數一般為:
小於或等於3
小於3
大於或等於4
大於4
小於4
2.
MULTIPLE SELECT QUESTION
1 min • 1 pt
非金屬元素原子最外層電子數一般為:
小於或等於3
大於3
大於或等於4
大於4
小於3
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
_____原子的最外層電子數一般為8(其中氦為2),具化學性質穩定。
稀有氣體原子
非金屬原子
金屬原子
半金屬原子
4.
MULTIPLE SELECT QUESTION
3 mins • 1 pt
關於鈉原子和鈉離子的認識不正確的是__。
它們之間的質子數相同
它們的核外電子層數相同
鈉離子比鈉原子多一個電子
鈉離子具有穩定結構
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
+1
+2
+3
+4
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
5
6
7
8
7.
MULTIPLE SELECT QUESTION
3 mins • 1 pt
已知硒(Se)原子核內有34個質子,則下列陳述中錯誤的有_。
Se可以表示一個硒原子
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