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Authored by NICULAE ANCA
Chemistry
7th Grade
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9 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Stratul electronic cu energia cea mai joasă este:
1K
7Q
1A
ultimul strat ocupat cu electroni
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Numărul maxim de electroni din stratul 1K este:
1
2
7
8
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Numărul maxim de electroni din stratul 3M este:
3
36
9
18
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Clorul (Z=17) are 2 e- pe stratul 1K, 8 e- pe stratul 2L și 7 e- pe stratul 3M.
Numărul straturilor complet ocupate cu electroni este:
1
2
3
4
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Numărul de electroni din învelișul magneziului este:
2
8
12
10
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Numărul electronilor din stratul 3M al magneziului este:
1
2
8
12
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Numărul atomic A, al clorului este:
35
18
17
7
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