Identitatea atomului
Quiz
•
Chemistry
•
7th Grade
•
Practice Problem
•
Hard
Delia Ognean
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9 questions
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1.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Masa atomului este concentrata in:
nucleu
invelisul electronic
protoni
neutroni
2.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Atomul are sarcina:
pozitiva
negativa
neutra
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Intr-un atom numarul atomic Z este egal cu:
nr. de electroni
nr. de neutroni
nr. de protoni
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Specificați numărul de electroni pentru Aluminiu cu A=26 si Z=13
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pentru Fluor cu 9 protoni si numărul de masă 18, numarul atomic Z este?
27
18
9
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Clorul are 17 electroni si numarul de masă 35. Numarul de neutroni este:
17
35
18
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Pentru azot cu 7 neutroni, 7 protoni, 7 electroni, numarul atomic este
14
7
21
8.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Sodiu are 11 electroni si numărul de masă 23. Cati neutroni are sodiul?
9.
MULTIPLE SELECT QUESTION
20 sec • 1 pt
Heliul cu cu Z=2 si n=2 are
2 protoni
2 electroni
A=2
A=4
2 neutroni
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