
Atomes et ions
Authored by Hamid Datsi
Chemistry, Other Sciences
8th Grade
Used 87+ times

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10 questions
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1.
MULTIPLE SELECT QUESTION
10 sec • 1 pt
le numero atomique d'un atome est-il:
le nombre de neutrons?
le nomre de protons?
le nombe d'electrons?
le nombre de nucleons?
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
l'ion oxygene O2- a pour numero atomique z = 8.
quel est le nombre de ses electrons?
6
8
10
12
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
où se trouve l'atome de numero atomique z = 17 dans le tableau périodique?
1 p er G7A
2 p et G7A
4p et G1A
3 p et G2A
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
X2+ et Y2- ont le meme nombre d'électrons que le gaz noble de la deuxième période. Quel est le numéro atomique de X et de Y?
ZX = 12 et ZY = 8
ZX = 8 et ZY = 12
ZX = 10 et ZY = 10
ZX = 2 et ZY = 2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Mg2+ a pour nombre d'électrons 10 et nombre de nucléons A = 24. Quel est le nombre de neutrons de Mg?
14
10
12
24
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
X possède 3 électrons. X+ est l'ion obtenu, Quel est le nombre de protons de X+?
3
2
1
4
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Mg2+ et Cl- forment un ion atomique. Lequel?
MgCl
MgCl2
Mg2Cl
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