Cd - Cadmium

This toxic metal was discovered by Fredrich Strohmeyer in 1817, who was heating zinc carbonate (formerly known as kadmia) to remove impurities. The crimson emission color of cadmium is identified the flame tests in CHM 152. The pictured bar is coated with CdO.

Atomic number - 48 Density g/mL 8 .65

Atomic weight u 112 .41 Melting point K 594 .18

Bonding radius A 1 .48 Boiling point K 1040

Atomic radius A 1 .71 Heat of vaporization kJ/mol 99 .57

Ionization Potential V 8 .993 Heat of fusion kJ/mol 6 .192

Electronegativity - 1 .69 Specific heat J/gK 0 .23

The oxide is mildly basic.
Crystal are hexagonal.

Electron config. : [Kr] 4d¹⁰ 5s²

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

H He

Li Be B C N O F Ne

Na Mg Al Si P S Cl Ar

K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr

Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe

Cs Ba La* Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn

Fr Ra Ac** Rf Db Sg Bh Hs Mt 110 111 112 113

Lanthanides* Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu

Actinides ** Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr

Isotopes of Cd: Click mass number for decay process, product for element page.

097
3 sec
EC/ECp,7.000
Ag-97/Pd-96
96.935172 098
9.2 sec
EC,5.420 MeV
Ag-98
97.927578 099
16 sec
EC/ECa/ECp,6.900
Ag-99/Rh-95/Pd-98
98.925012 100
49.1 sec
EC,3.890 MeV
Ag-100
99.920278 101
1.2 min
EC,5.480 MeV
Ag-101
100.91867 102
5.5 min
EC,2.587 MeV
Ag-102
101.91473 103
7.3 min
EC,4.142 MeV
Ag-103
102.91341

104
57.7 min
EC,1.136 MeV
Ag-104
103.90984 105
55.5 min
EC,2.739 MeV
Ag-105
104.90946 106 1.25%

Stable

105.90645 107
6.50 hr
EC,1.417 MeV
Ag-107
106.90661 108 0.89%

Stable

107.90418 109
462.6 da
EC,1.116 MeV
Ag-109
108.90498 110 12.49%

Stable

109.90300

111 12.80%

Stable

110.90418 112 24.13%

Stable

111.90275 113 12.22%
9.3E+15 yr
B-,2.059 MeV
In-113
112.90440 114 28.73%

Stable

113.90335 115
53.46 hr
B-,1.446 MeV
In-115
114.90543 116 7.49%

Stable

115.90475 117
2.49 hr
B-,2.517 MeV
In-117
116.90721

118
50.3 min
B-,7.188 MeV
In-118
117.90691 119
2.69 min
B-,3.800 MeV
In-119
118.90992 120
50.80 sec
B-,1.760 MeV
In-120
119.90985 121
13.5 sec
B-,4.890 MeV
In-121
120.91309 122
5.24 sec
B-,3.000 MeV
In-122
121.91350 123
2.10 sec
B-,6.120 MeV
In-123
122.91700 124
1.24 sec
B-,4.170 MeV
In-124
123.91764

125
0.65 sec
B-,7.160 MeV
In-125
124.92128 126
0.506 sec
B-,5.490 MeV
In-126
125.92235 127
0.37 sec
B-,8.470 MeV
In-127
126.92643 128
0.34 sec
B-,7.100 MeV
In-128
127.92775 129
0.27 sec
B-,1.251 MeV
In-129
129.0 130
0.20 sec
B-/B-n,1.604
In-130/In-129
129.93090

MASS abund.
Halflife
Particle, Energy
Decay Product(s)
Isotopic Mass

Updated by clh on 2/6/98. This is not a publication of Phoenix College.

Atomic number	-	48		Density	g/mL	8	.65
Atomic weight	u	112	.41	Melting point	K	594	.18
Bonding radius	A	1	.48	Boiling point	K	1040
Atomic radius	A	1	.71	Heat of vaporization	kJ/mol	99	.57
Ionization Potential	V	8	.993	Heat of fusion	kJ/mol	6	.192
Electronegativity	-	1	.69	Specific heat	J/gK	0	.23
The oxide is mildly basic.				Crystal are hexagonal.
Electron config. : [Kr] 4d¹⁰ 5s²
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097 3 sec EC/ECp,7.000 Ag-97/Pd-96 96.935172	098 9.2 sec EC,5.420 MeV Ag-98 97.927578	099 16 sec EC/ECa/ECp,6.900 Ag-99/Rh-95/Pd-98 98.925012	100 49.1 sec EC,3.890 MeV Ag-100 99.920278	101 1.2 min EC,5.480 MeV Ag-101 100.91867	102 5.5 min EC,2.587 MeV Ag-102 101.91473	103 7.3 min EC,4.142 MeV Ag-103 102.91341
104 57.7 min EC,1.136 MeV Ag-104 103.90984	105 55.5 min EC,2.739 MeV Ag-105 104.90946	106 1.25% Stable 105.90645	107 6.50 hr EC,1.417 MeV Ag-107 106.90661	108 0.89% Stable 107.90418	109 462.6 da EC,1.116 MeV Ag-109 108.90498	110 12.49% Stable 109.90300
111 12.80% Stable 110.90418	112 24.13% Stable 111.90275	113 12.22% 9.3E+15 yr B-,2.059 MeV In-113 112.90440	114 28.73% Stable 113.90335	115 53.46 hr B-,1.446 MeV In-115 114.90543	116 7.49% Stable 115.90475	117 2.49 hr B-,2.517 MeV In-117 116.90721
118 50.3 min B-,7.188 MeV In-118 117.90691	119 2.69 min B-,3.800 MeV In-119 118.90992	120 50.80 sec B-,1.760 MeV In-120 119.90985	121 13.5 sec B-,4.890 MeV In-121 120.91309	122 5.24 sec B-,3.000 MeV In-122 121.91350	123 2.10 sec B-,6.120 MeV In-123 122.91700	124 1.24 sec B-,4.170 MeV In-124 123.91764
125 0.65 sec B-,7.160 MeV In-125 124.92128	126 0.506 sec B-,5.490 MeV In-126 125.92235	127 0.37 sec B-,8.470 MeV In-127 126.92643	128 0.34 sec B-,7.100 MeV In-128 127.92775	129 0.27 sec B-,1.251 MeV In-129 129.0	130 0.20 sec B-/B-n,1.604 In-130/In-129 129.93090
MASS abund. Halflife Particle, Energy Decay Product(s) Isotopic Mass