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LesGenereuxMaiderons
@LesGenereuxMaiderons
May 2019
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DM de physique Chimie 2nde merci à ceux qui peuvent m'aider.
1.Le numéro atomique Z correspond au nombre:
a) de protons; b) d'électrons; c) de nucléons;
2. Le nombre de masse A correspond au nombre de:
a) protons et d'électrons; b) protons et de neutrons; c) nucléons;
3. Le nombre de neutrons N s'obtient par le calcul:
a) N=A-Z b) N=A+Z c) N=Z-A
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Commentaires (5)
Hello
1a (et donc b par électroneutralité)
2b et c
3a et c
0 votes
Thanks 0
LesGenereuxMaiderons
merci
LesGenereuxMaiderons
ok !
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Eh les gens quelqu'un sait comment calculer un quartile ?
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1a (et donc b par électroneutralité)
2b et c
3a et c