Page 69 - Chemistry eBook

11 12
345678
2-8-1 2-8-2
Period is the horizontal
Periods/Rows
1
1
1.00794 +1 H –1
Periodic Tab KEY
1 C
+2 PERIODS/ROWS: The horizontal rows on the Periodic Table +4
1 Group 2
6.941 +1 9.01218 +2
Symbol Atomic Number
6 2 Li Be Electron Configuration 2-4
+2
Period 4 contains elements that have 4 energy shells.
• The elements on each row have the same number of energy shells.
Atomic Mass
12.011 –4
34
2-1 2-2
22.98977 +1 24.305
3 4
5 6
7
We place a period
Na Mg at the end of a Group
horizontal sentence.
39.0983 +1
19 K
2-8-8-1
40.08 +2
20
Ca
2-8-8-2
44.9559 +3
21
Sc
2-8-9-2
47.867 +2 +4
50.9415 +2 51.996 +2 54.9380 +2
55.845 +2 Fe+3
2-8-14-2 101.07 +3
Ti +3 2-8-10-2
row in the table. (Ex:
V+3 Cr+3 Mn+3 +4 +6 +4
Listen to me, period.)
22
23 +524 25 +7 2-8-11-2 2-8-13-1 2-8-13-2
26
Each element within
+3 91.224 +4
Rb Sr Y Zr Nb+5 Mo Tc+6
85.4678 +1 87.62
+2 88.9059
92.9064 +3 95.94 +6 (98) +4
Ru
37 38 39 40 41 42 43 44
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 2-8-18-13-2 2-8-18-15-1
132.905 +1 137.33 +2 138.9055 +3 178.49 +4 180.948 +5 183.84 +6 186.207 +4 190.23 +3 +7
Cs Ba La Hf Ta W Re+6 Os+4 55 56 57 72 73 74 75 76
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 -18-32-13-2 -18-32-14-2 (223) +1 (226) +2 (227) +3 (261) +4 (262) (266) (272) (277)
Fr Ra Ac Rf Db Sg Bh Hs 87 88 89 104 105 106 107 108
a period has the same +7
number of principal
energy shells.
le of
Selected Oxidati
Relative atomic on 12C = 12 (ex
Note: Numbers i are mass numb stable or commo
91
58.9332 +2 Co+3
28
27
2-8-15-2 102.906
45
46
58.693
2-8-16- +3 106.42
+3
Rh P
2-8-18-16-1 192.217
2-8-18- 195.08
Ir +4 -18-32-15-2
77
78
(276)
-18-32- (281)
Mt 109
110
t
m a
e
0
N
2
1
P
1
P eriod
UNIT 3: PERIODIC TABLE OF ELEMENTS © 69
Reference Tables for Physical Setting/Chemistry – 2011 Edition
D