Chemistry Lesson Plan Template Page 14
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22Formation of Anions
When an atom gains electrons, it form anions.
7
Most common anions are nonmetal anions.
-
-
Cl
Cl
+ 1e
1s
2
2s
2
2p
6
3s
2
3p
6
1s
2
2s
2
2p
6
3s
2
3p
5
Cl
Cl
-
Halogen anions are called halides.
Example: Fluoride, Chloride, Bromide, & Iodide
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