
Sistemul periodic al elementelor chimice

Quiz
•
Chemistry
•
7th Grade
•
Medium
Monika Cseh
Used 1+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Care element se găsește în perioada 2?
Fluor
Potasiu
Oxigen
Calciu
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Care este metalul ușor?
sodiu
fier
aur
cupru
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Un element are pe stratul 3(M) – 7 electroni.....care?
clor
brom
sulf
oxigen
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A
Configurația electronică a atomilor unui element este: 1(K) – 2e–; 2(L) – 8e–. Determină poziția elementului în Tabelul Periodic.
grupa 2, perioada 2
grupa 18, perioada 2
grupa 18, perioada 1
grupa 10, perioada 2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Numărul maxim de electroni de pe stratul M este:
8
18
2
nici unu nu este corect
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Atomul 24 X :
are structură stabilă de octet;
are 4 electroni în învelișul electronic
se află situat în grupa 1
este un gaz rar
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
..........este un gaz rar din perioada a 2-a.
azot
hidrogen
argon
neon
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