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Silviacosamaria
a fost răspuns

reprezentau modelul de formare a ionilor, pt. : z=20 ; z=19 ; z=13

Răspuns :

Alexbonheur
pt: Z= 20:
[tex]1s^2 2s^22p^63s^23p^6 4s^2[/tex] = [tex]-2e^-[/tex]=> [tex]Ca ^{2+} :1s^2 2s^22p^63s^23p^6[/tex]

Z=19 : 
[tex]1s^2 2s^22p^63s^23p^6 4s^1 [/tex] =[tex]-1e^-[/tex]=> [tex]K^{1+}: 1s^2 2s^22p^63s^23p^6[/tex]

Z=13:
[tex]1s^2 2s^22p^63s^23p^1[/tex] =[tex]-3e^-[/tex]=> [tex]Al^{3+}: 1s^2 2s^22p^6[/tex]

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