Page 61 - Chemistry eBook

Lewis Dot Diagram
Perio KEY
Atomic Mass 12. Symbol
2-1 2-2 1. Place the symbol of the element in the cent2e2r..98977 +1
1
1.00794 +1 1 1 H–1
1
How to draw a Lewis Dot Diagram:
Atomic Number
Electron Configuration 2-4
3456
1 Group 2
6.941 +1 9.01218 +2
6
2 Li Be 34
element by looking at Reffy (p. 9). 2-8-1
39.0983 +1 40.08 +2
44.9559 +3 47.867
+2 54. +3 V +3 Cr+3
+4 +4 +6
3. Place the valence electrons around elements symbol.
NOTE: As of 2015, you can place valence electrons on any
side in any order
85.4678 +1 87.62 +2
92.9064 +3 95.94 +6 Nb +5 Mo
3
Na
2. Find out how many valence electrons there are for that 11
2-8-11-2 2-8-13-1 2-8
(98
4
K Ca
Sc Ti
+2 50.9415 +2 51.996
19 20 21 22 23 +524 2
2-8-8-1 2-8-8-2
2-8-9-2 2-8-10-2 88.9059 +3 91.224 +4
24.305 +2
12
Mg
2-8-2
Y Zr
37 38 39 40 41 42 4
5 Rb Sr
2-8-18-8-1 2-8-18-8-2 2-8-18-9-2 2-8-18-10-2 2-8-18-12-1 2-8-18-13-1 2-8
6 Cs Ba La Hf Ta W
55 56 57 72 73 74 7
132.905 +1 137.33 +2 138.9055 +3 178.49 +4 180.948 +5 183.84 +6 18
2-8-18-18-8-1 2-8-18-18-8-2 2-8-18-18-9-2 *18-32-10-2 -18-32-11-2 -18-32-12-2 -1 (223) +1 (226) +2 (227) +3 (261) +4 (262) (266) (27
7 Fr Ra Ac Rf Db Sg
87 88 89 104 105 106 1
-18-32-18-8-1 -18-32-18-8-2 -18-32-18-9-2
icT
11 – +
C+ Gr oup
78
9380 +2 +4
55.845
Mn+3 +7
F 26
-13-2
) +4
2-8-14-2 101.07
+7 Tc+6
R 44
-18-13-2 6.207 +4
2-8-18-15- 190.23
+7 Re+6
O 76
8-32-13-2 2)
-18-32-14- (277)
Bh H 7 108
140.116 140.908
+3 144.24
(145)
da
04 2 4
P eriod
e 5
u 3
s 5
s 0
UNIT 2: ATOMIC STRUCTURE © 61
Reference Tables for Physical Setting/Chemistry – 2011 Edition