Page 68 - Chemistry eBook

1
2
3
H –1
KEY
1
1
Group
1
6.941
Periodic Table of the
1.00794 +1
Atomic Number
Li 34
2-1 22.98977
+1
Mg
Na
1. Elements are shown in order of increasing atomic number.
11
12
3 4 5 6 7 8 9 10 54.9380 +2 55.845 +2 58.9332 +2 58.693
2-8-1
2-8-2
Notice the numbers in the bottom left corner increasing: 19, 20,
2
23, 24. (T
s
e
th
Atomic Mass Symbol
Atomic Number Electron Configuration
12.011 –4
Selected Oxidation States
5 Rb Sr Y Zr Nb+5 Mo Tc+6 Ru Rh Pd+4
37 38 39 40 41 42 43 44 45 46 47
h
.)
i
patt
r
n
cont
i
n
u
e
s th
r
o
u
g
h
e
e
ire
o
b
e
n
t
P
-2
132.905 +1 137.33 +2 138.9055 +3 178.49 +4 180.948 +5 183.84 +6 186.207 +4 190.23 +3 192.217 +3 195.08 +2
2-8
-1
-1
8
-8-1
2
-8-
18
-8-2
2
-8
There are many, many Regents questions on this topic.
-1
8-
9-2
2-
2-8-1 196.9
2. The atomic number of the element determines its chemical properties.
6
+7
Cs Ba La Hf Ta W Re+6 Os+4 Ir+4 Pt+4
2
-
8-1
8-
10
2
-8-1
8-
12
-1
2
-8-
55 56 57 72 73 74 75 76 77 78 79
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 -18-32-15-2 -18-32-17-1 (223) +1 (226) +2 (227) +3 (261) +4 (262) (266) (272) (277) (276) (281)
-18-3 (280)
11
157.2
64
(247)
e
18
r
i
dic
T
-1
3
8-1
a
l
2-8-18-15-1 2-8-18-16-1 2-8-18-18
8
C +2 +4
G r o u p
Relative atomic masses ar 12
+1
9.01218
+2
+2
6
2-4
Note: Numbers in parenth are mass numbers of the stable or common isotope.
2
on C = 12 (exact)
Be
2-2 24.305
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
Ti +3 2-8-10-2
22
50.9415 +2
23
V +3 +4 +5
2-8-11-2
51.996 +2 +6
24
Cr+3
2-8-13-1
4
Mn+3 Fe+3 Co+3 Ni+3 +7
63.54
2-8-13-2 2-8-14-2 2-8-15-2 2-8-16-2 2-8-1
-13
-
2
+4
25 26 27 28 29
+2
85.4678
+1 87.62
+2 88.9059
+3 91.224
+4 92.9064
+3 95.94
+6 (98) +4 101.07 +3 102.906 +3 106.42 +2
107.8
+
7
1, 22,
7
Fr Ra Ac Rf Db Sg Bh Hs Mt Ds
87 88 89 104 105 106 107 108
109 110
-18-32-18-8-1 -18-32-18-8-2 -18-32-18-9-2
140.116 +3 140.908 +3 144.24 +3 (145) +3
+4 +3 +3
Ce Pr Nd Pm Sm Eu
58 59 60
+4 238.029 +3 +5 +4
+5 +6
61
62
63
232.038 +4 231.036
(237) +3
(244) +3
(243) +3 +4 +5
Th Pa U
Np
+4 +5 +6
Pu
+4 +5 +6
Am
150.36 +2 151.964 +2
+6
e
e m
C
A
A
R 1
G C
Reference Tables for Physical Setting/Chemistry – 2011 Edition
68 © UNIT 3: PERIODIC TABLE OF ELEMENTS
P eriod