Bonsoir ! quelqu'un peut m'aider ? Bonne soirée à vous ! .... Pergunta de ideia decxbyeol

cxbyeol @cxbyeol

June 2021 1 120 Report

Bonsoir ! quelqu'un peut m'aider ?
Bonne soirée à vous !

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lolafermier

Réponse:

1.a. = 3

b. il possède 2 électrons

2. c’est la deuxième proposition : 1S2 2S2 2P6 3S2

0 votes Thanks 0

lolafermier tu veux le reste ?

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