Periodic Table of Chemical Elements
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
I
II
IIIb
IVb
Vb
VIb
VIIb
VIIIb
Ib
IIb
III
IV
V
VI
VII
VIII
1
H
1.0079
2
He
4.0026
3
Li
6.9412
4
Be
9.0121
5
B
10.811
6
C
12.010
7
N
14.006
8
O
15.999
9
F
18.998
10
Ne
20.179
11
Na
22.989
12
Mg
24.305
13
Al
26.981
14
Si
28.085
15
P
30.973
16
S
32.065
17
Cl
35.453
18
Ar
39.948
19
K
39.098
20
Ca
40.078
21
Sc
44.955
22
Ti
47.867
23
V
50.941
24
Cr
51.996
25
Mn
54.938
26
Fe
55.845
27
Co
58.933
28
Ni
58.693
29
Cu
63.546
30
Zn
65.409
31
Ga
69.723
32
Ge
72.641
33
As
74.921
34
Se
78.963
35
Br
79.904
36
Kr
83.798
37
Rb
85.467
38
Sr
87.621
39
Y
88.905
40
Zr
91.224
41
Nb
92.906
42
Mo
95.942
43
Tc
98.906
44
Ru
101.07
45
Rh
102.90
46
Pd
106.42
47
Ag
107.86
48
Cd
112.41
49
In
114.81
50
Sn
118.71
51
Sb
121.76
52
Te
127.60
53
I
126.90
54
Xe
131.29
55
Cs
132.90
56
Ba
137.32
57
La
138.90
72
Hf
178.49
73
Ta
180.94
74
W
183.84
75
Re
186.20
76
Os
190.23
77
Ir
192.21
78
Pt
195.08
79
Au
196.96
80
Hg
200.59
81
Tl
204.38
82
Pb
207.21
83
Bi
208.98
84
Po
208.98
85
At
209.98
86
Rn
222.01
87
Fr
223.01
88
Ra
226.02
89
Ac
227.02
104
Rf
261.10
105
Db
262.11
106
Sg
266.12
107
Bh
264.12
108
Hs
109
Mt
110
Ds
111
Rg
112
Cn
113
Uut
114
Fl
115
Uup
116
Lv
117
Uus
118
Uuo
Lanthanoids
58
Ce
140.11
59
Pr
140.90
60
Nd
144.24
61
Pm
146.91
62
Sm
150.36
63
Eu
151.96
64
Gd
157.25
65
Tb
158.92
66
Dy
162.50
67
Ho
164.93
68
Er
167.25
69
Tm
168.93
70
Yb
173.04
71
Lu
174.96
Actinoids
90
Th
232.03
91
Pa
231.03
92
U
238.02
93
Np
237.04
94
Pu
244.06
95
Am
243.06
96
Cm
247.07
97
Bk
247.07
98
Cf
251.07
99
Es
252.08
100
Fm
257.09
101
Md
258.09
102
No
259.10
103
Lr
260.10
Alkali metals
Alkali earth metals
Transition metals
Other metals
Semi-metals
Non-metals
Noble gases
Zr
Zirconium
Zr
Atomic number
40
Atomic weight
91.2242
amu
Stable and very long lived isotopes
90
Zr: 51.45%,
91
Zr: 11.32%,
92
Zr: 17.19%,
94
Zr: 17.28%
Electronic configuration
1s
2
2s
2
2p
6
3s
2
3p
6
3d
10
4s
2
4p
6
5s
2
4d
2
Sample compounds
ZrO
2
ZrSiO
4
ZrCl
4
ZrI
4
Zr(SeO
3
)
2
BaZrO
3
Sample reactions
Zr + N
2
= ZrN
Zr + N
2
= Zr
3
N
4
Zr + N = ZrN
Density
6.506
g/cm
3
(STP)
Melting
1852
°C
Boiling
4377
°C
Covalent radius
1.48
Å
Van der Waals radius
Å
Ionic radius
0.72
Å
First ionization potential
6.634
eV = 53508 cm
-1
= 640.1 kJ/mol
Electron affinity
-0.425
eV = -3427 cm
-1
= -41.0 kJ/mol
Wikipedia article about Zirconium
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