Nemetalele

Nemetalele

10th Grade

30 Qs

quiz-placeholder

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Nemetalele

Nemetalele

Assessment

Quiz

Chemistry

10th Grade

Practice Problem

Hard

Created by

Olga Surujiu

Used 13+ times

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30 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Atomul de fosfor are pe stratul exterior electroni de valență

2

4

3

5

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

În compușii cu oxigenul fosforul manifestă grad de oxidare maximal egal cu

+3

-2

+5

+7

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Compusul hidrogenat al fosforului are formula

P2O5

PH3

H3PO4

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

În compușii cu hidrogenul azotul are valența:

I

III

V

II

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Care element formează compus volatil cu hidrogenul soluția căruia are pH mai mare ca 7

C

N

F

H

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Substanța este formată doar din elemente s

C

N

F

H

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

În compoziția nucleului conține 6 protoni și 6 neutroni

C

N

F

H

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