bai lien ket ion-thi GVG

TR NG THPT B¾c s¬n ƯỜ
TR NG THPT B¾c s¬n ƯỜ


Gi¸o viªn thùc
Gi¸o viªn thùc
hiÖn: NguyÔn ThÞ
hiÖn: NguyÔn ThÞ
Hång
Hång
ý
ý


KiÓm tra bµi cò
KiÓm tra bµi cò


? ViÕt cÊu h×nh electron cña:
? ViÕt cÊu h×nh electron cña:
a, Na(z=11), Na
a, Na(z=11), Na
+
+
, Mg(z=12), Mg
, Mg(z=12), Mg
2+
2+
, Al(z=13),
, Al(z=13),
Al

Al
3+
3+
.
.
b, Cl(z=17), Cl
b, Cl(z=17), Cl
-
-
, O(z=8), O
, O(z=8), O
2-
2-
, N(z=7), N
, N(z=7), N
3-
3-
.
.
3
TiÕt 22: Liªn kÕt ion - Tinh thÓ
ion
3+ 3+
+
Li Li
Li Li
+
+
+ 1e
+ 1e

1e
1e
I. Sù h×nh thµnh ion, cation, anion
I. Sù h×nh thµnh ion, cation, anion
1. Ion, cation, anion
1. Ion, cation, anion


a, Sù h×nh thµnh cation
a, Sù h×nh thµnh cation
(cation Natri)
(cation Magie)
(cation Nh«m)
Na
(2,8,1)
Na
+
+ 1e
Mg
2+
+ 2e


M
g
(
2
,
8
,

2
)
Al
3+
+ 3e
Al
(2,8,3)
- Tæng qu¸t: R  R
n+
+ ne [ion d­¬ng(cation)]
- Tªn cation = cation + tªn kim lo¹i
+
F + 1e F
–
1e
1e
9+
9+
b, Sù h×nh thµnh anion