Cations And Anions
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- Words: 229
- Pages: 7
Title: Oct 28-9:31 AM (1 of 7)
Title: Oct 28-9:35 AM (2 of 7)
Title: Oct 28-9:44 AM (3 of 7)
Stable VALENCE electron configurations
nucleus
Title: Oct 28-9:46 AM (4 of 7)
Cations: become + by LOSING electrons 23
24
Na
[Metals mainly] 27
Mg
11
Al
12
13
+
+
n
n
loses 1eoverall charge +1
+1 Na
loses 2eoverall charge +2
+2 Mg
+
n
loses 3eoverall charge +3
+3 Al
*Each ion will lose enough electrons to take on the electron configuration of the nearest noble gas Title: Oct 26-8:19 AM (5 of 7)
Anions: become - by GAINING electrons 14
16
N
19
O
7
F
8
9
+
+
+
n
n
n
gains 3eoverall charge -3
N
[Nonmetals]
-3
gains 2eoverall charge -2
O
-2
gains 1eoverall charge -1
F
-1
*Each ion will lose enough electrons to take on the electron configuration of the nearest noble gas Title: Oct 26-8:20 AM (6 of 7)
Cation / Anion practice problems Directions: Determine the total # e's in the following?
1. Mg+2 2. C-4 3. H+1 4. H-1 5. B+3 6. Cu+2 7. F-1 -2 8. S 9. Ne 10. Br
-1
Title: Oct 26-8:20 AM (7 of 7)
11. How did the positive ions (cations) achieve their new charges? How about the anions?
12. Which species 1-10 contain the greatest nuclear charge?
Title: Oct 28-9:35 AM (2 of 7)
Title: Oct 28-9:44 AM (3 of 7)
Stable VALENCE electron configurations
nucleus
Title: Oct 28-9:46 AM (4 of 7)
Cations: become + by LOSING electrons 23
24
Na
[Metals mainly] 27
Mg
11
Al
12
13
+
+
n
n
loses 1eoverall charge +1
+1 Na
loses 2eoverall charge +2
+2 Mg
+
n
loses 3eoverall charge +3
+3 Al
*Each ion will lose enough electrons to take on the electron configuration of the nearest noble gas Title: Oct 26-8:19 AM (5 of 7)
Anions: become - by GAINING electrons 14
16
N
19
O
7
F
8
9
+
+
+
n
n
n
gains 3eoverall charge -3
N
[Nonmetals]
-3
gains 2eoverall charge -2
O
-2
gains 1eoverall charge -1
F
-1
*Each ion will lose enough electrons to take on the electron configuration of the nearest noble gas Title: Oct 26-8:20 AM (6 of 7)
Cation / Anion practice problems Directions: Determine the total # e's in the following?
1. Mg+2 2. C-4 3. H+1 4. H-1 5. B+3 6. Cu+2 7. F-1 -2 8. S 9. Ne 10. Br
-1
Title: Oct 26-8:20 AM (7 of 7)
11. How did the positive ions (cations) achieve their new charges? How about the anions?
12. Which species 1-10 contain the greatest nuclear charge?
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