Atomul de fosfor are pe stratul exterior un nr de electroni egal cu:

Nemetalele și metalele

Quiz
•
Chemistry
•
10th Grade
•
Hard
Olea Surujiu
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20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
2
3
8
5
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
În compușii cu oxigenul, clorul manifestă grad de oxidare maximal egal cu:
+1
+3
+7
+5
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Compusul hidrogenat al fosforului are formula:
PH3
P2O5
H3PO4
PO43-
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Elementul chimic cu Z=19 formează oxizi de tipul EO
Adevărat
Fals
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Oxidul acid CO2 tulbură de apa de var
Adevărat
Fals
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
La interacțiunea unui mol de NaOH cu un mol de H2SO4 se formează o sare neutră
Adevărat
Fals
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Creta, marmura și calcarul au aceeași compoziție chimică CaCO3
adevărat
fals
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