{{위키데이터 속성 추적}}
자연계에 존재하는 [[카드뮴]]의 [[동위 원소]]는 8개이다. 이들 중 <sup>113</sup>Cd과 <sup>116</sup>Cd은 방사성 동위 원소이다.

관찰 안정 동위 원소로서 <sup>106</sup>Cd과 <sup>108</sup>Cd은 β<sup>+</sup>β<sup>+</sup> 붕괴를 통해 팔라듐의 안정 동위 원소로 붕괴하며 <sup>114</sup>Cd은 β<sup>-</sup>β<sup>-</sup> 붕괴를 통해 <sup>114</sup>Sn로 붕괴할 것으로 예상되지만 아직 붕괴하는 모습은 관찰되지 않았다. 이들은 어쩌면 다른 안정 동위 원소들처럼 붕괴하지 않을 수도 있다.

<sup>110</sup>Cd, <sup>111</sup>Cd, <sup>112</sup>Cd은 붕괴하지 않는 안정 동위 원소로 취급된다. (어쩌면 이들도 자발 핵분열을 할 수 있다.)

인공적으로 합성된 카드뮴의 동위 원소로는 <sup>95</sup>Cd에서 <sup>132</sup>Cd까지 분포한다.

== 표 ==
{| class="wikitable" style="font-size:95%; white-space:nowrap"
! rowspan="2" | 핵자<br />수
! Z([[양성자|p]])
! N([[중성자|n]])
! &nbsp;<br />동위 원소 질량 (u)<br />&nbsp;
! rowspan="2" | 반감기<ref group="n">우주의 나이보다 반감기가 긴 동위 원소는 굵은 글씨로 표기 (안정에 가까움)</ref>
! rowspan="2" | 붕괴<br />방식<ref group="n">약어:<br />IT: [[이성질핵 전이]]</ref>
! rowspan="2" | 생성<br />동위 원소<ref group="n">안정 동위 원소는 굵은 글씨로 표기</ref>
! rowspan="2" | 핵<br />스핀
! rowspan="2" | 자연계에 존재하는<br />동위 원소의<br />범위<br />(몰 분율)
! rowspan="2" | 자연계에 존재하는<br />최대 범위<br />(몰 분율)
|-
! colspan="3" | 들뜬 에너지
|-
| <sup>95</sup>Cd
| style="text-align:right" | 48
| style="text-align:right" | 47
| 94.94987(64)#
| 5# ms
|
|
| 9/2+#
|
|
|-
| <sup>96</sup>Cd
| style="text-align:right" | 48
| style="text-align:right" | 48
| 95.93977(54)#
| 1# s
| [[베타 붕괴|β<sup>+</sup>]]
| <sup>96</sup>Ag
| 0+
|
|
|-
| rowspan=2|<sup>97</sup>Cd
| rowspan=2 style="text-align:right" | 48
| rowspan=2 style="text-align:right" | 49
| rowspan=2|96.93494(43)#
| rowspan=2|2.8(6) s
| β<sup>+</sup> (>99.9%)
| <sup>97</sup>Ag
| rowspan=2|9/2+#
| rowspan=2|
| rowspan=2|
|-
| β<sup>+</sup>, [[양성자 방출|p]] (<0.1%)
| <sup>96</sup>Pd
|-
| rowspan=2|<sup>98</sup>Cd
| rowspan=2 style="text-align:right" | 48
| rowspan=2 style="text-align:right" | 50
| rowspan=2|97.92740(8)
| rowspan=2|9.2(3) s
| β<sup>+</sup> (99.975%)
| <sup>98</sup>Ag
| rowspan=2|0+
| rowspan=2|
| rowspan=2|
|-
| β<sup>+</sup>, p (0.025%)
| <sup>97</sup>Ag
|-
| style="text-indent:1em" | <sup>98m</sup>Cd
| colspan="3" style="text-indent:2em" | 2427.5(6) keV
| 190(20) ns
|
|
| 8+#
|
|
|-
| rowspan=3|<sup>99</sup>Cd
| rowspan=3 style="text-align:right" | 48
| rowspan=3 style="text-align:right" | 51
| rowspan=3|98.92501(22)#
| rowspan=3|16(3) s
| β<sup>+</sup> (99.78%)
| <sup>99</sup>Ag
| rowspan=3|(5/2+)
| rowspan=3|
| rowspan=3|
|-
| β<sup>+</sup>, p (0.21%)
| <sup>98</sup>Pd
|-
| β<sup>+</sup>, [[알파 붕괴|α]] (10<sup>−4</sup>%)
| <sup>94</sup>Rh
|-
| <sup>100</sup>Cd
| style="text-align:right" | 48
| style="text-align:right" | 52
| 99.92029(10)
| 49.1(5) s
| β<sup>+</sup>
| <sup>100</sup>Ag
| 0+
|
|
|-
| <sup>101</sup>Cd
| style="text-align:right" | 48
| style="text-align:right" | 53
| 100.91868(16)
| 1.36(5) min
| β<sup>+</sup>
| <sup>101</sup>Ag
| (5/2+)
|
|
|-
| <sup>102</sup>Cd
| style="text-align:right" | 48
| style="text-align:right" | 54
| 101.91446(3)
| 5.5(5) min
| β<sup>+</sup>
| <sup>102</sup>Ag
| 0+
|
|
|-
| <sup>103</sup>Cd
| style="text-align:right" | 48
| style="text-align:right" | 55
| 102.913419(17)
| 7.3(1) min
| β<sup>+</sup>
| <sup>103</sup>Ag
| 5/2+
|
|
|-
| <sup>104</sup>Cd
| style="text-align:right" | 48
| style="text-align:right" | 56
| 103.909849(10)
| 57.7(10) min
| β<sup>+</sup>
| <sup>104</sup>Ag
| 0+
|
|
|-
| <sup>105</sup>Cd
| style="text-align:right" | 48
| style="text-align:right" | 57
| 104.909468(12)
| 55.5(4) min
| β<sup>+</sup>
| <sup>105</sup>Ag
| 5/2+
|
|
|-
| <sup>106</sup>Cd
| style="text-align:right" | 48
| style="text-align:right" | 58
| 105.906459(6)
| colspan=3 align=center|'''관찰 안정'''<ref group="n">'''<sup>106</sup>Pd'''으로 β<sup>+</sup>β<sup>+</sup> 붕괴할 것이며 반감기는 4.1×10<sup>20</sup> 년을 초과할 것으로 예상된다.</ref>
| 0+
| 0.0125(6)
|
|-
| <sup>107</sup>Cd
| style="text-align:right" | 48
| style="text-align:right" | 59
| 106.906618(6)
| 6.50(2) h
| β<sup>+</sup>
| <sup>107m</sup>Ag
| 5/2+
|
|
|-
| <sup>108</sup>Cd
| style="text-align:right" | 48
| style="text-align:right" | 60
| 107.904184(6)
| colspan=3 align=center|'''관찰 안정'''<ref group="n">'''<sup>108</sup>Pd'''으로 β<sup>+</sup>β<sup>+</sup> 붕괴할 것이며 반감기는 2.8×10<sup>21</sup> 년을 초과할 것으로 예상된다.</ref>
| 0+
| 0.0089(3)
|
|-
| <sup>109</sup>Cd
| style="text-align:right" | 48
| style="text-align:right" | 61
| 108.904982(4)
| 461.4(12) d
| [[전자 포획|ε]]
| '''<sup>109</sup>Ag'''
| 5/2+
|
|
|-
| style="text-indent:1em" | <sup>109m1</sup>Cd
| colspan="3" style="text-indent:2em" | 59.6(4) keV
| 12(2) µs
|
|
| 1/2+
|
|
|-
| style="text-indent:1em" | <sup>109m2</sup>Cd
| colspan="3" style="text-indent:2em" | 463.0(5) keV
| 10.9(5) µs
|
|
| 11/2-
|
|
|-
| <sup>110</sup>Cd
| style="text-align:right" | 48
| style="text-align:right" | 62
| 109.9030021(29)
| colspan=3 align=center|'''안정'''<ref group="n" name="SF">이론상으로 자발 핵분열을 할 수 있다.</ref>
| 0+
| 0.1249(18)
|
|-
| <sup>111</sup>Cd<ref group="n" name="FP">[[핵분열 생성물]]</ref>
| style="text-align:right" | 48
| style="text-align:right" | 63
| 110.9041781(29)
| colspan=3 align=center|'''안정'''<ref group="n" name="SF"/>
| 1/2+
| 0.1280(12)
|
|-
| style="text-indent:1em" | <sup>111m</sup>Cd
| colspan="3" style="text-indent:2em" | 396.214(21) keV
| 48.50(9) min
| [[이성질핵 전이|IT]]
| '''<sup>111</sup>Cd'''
| 11/2-
|
|
|-
| <sup>112</sup>Cd<ref group="n" name="FP" />
| style="text-align:right" | 48
| style="text-align:right" | 64
| 111.9027578(29)
| colspan=3 align=center|'''안정'''<ref group="n" name="SF"/>
| 0+
| 0.2413(21)
|
|-
| <sup>113</sup>Cd<ref group="n" name="FP" /><ref group="n" name="PN">태양계 초창기부터 존재해 왔었던 방사성 핵자</ref>
| style="text-align:right" | 48
| style="text-align:right" | 65
| 112.9044017(29)
| '''7.7(3)×10<sup>15</sup> a'''
| β<sup>-</sup>
| '''<sup>113</sup>In'''
| 1/2+
| 0.1222(12)
|
|-
| rowspan=2 style="text-indent:1em" | <sup>113m</sup>Cd<ref group="n" name="FP" />
| rowspan=2 colspan="3" style="text-indent:2em" | 263.54(3) keV
| rowspan=2|14.1(5) a
| β<sup>-</sup> (99.86%)
| '''<sup>113</sup>In'''
| rowspan=2|11/2-
| rowspan=2|
| rowspan=2|
|-
| IT (0.139%)
| '''''<sup>113</sup>Cd'''''
|-
| <sup>114</sup>Cd<ref group="n" name="FP" />
| style="text-align:right" | 48
| style="text-align:right" | 66
| 113.9033585(29)
| colspan=3 align=center|'''관찰 안정'''<ref group="n">'''<sup>114</sup>Sn'''으로 β<sup>-</sup>β<sup>-</sup> 붕괴할 것이며 반감기는 9.5×10<sup>23</sup> 년을 초과할 것으로 예상된다.</ref>
| 0+
| 0.2873(42)
|
|-
| <sup>115</sup>Cd<ref group="n" name="FP" />
| style="text-align:right" | 48
| style="text-align:right" | 67
| 114.9054310(29)
| 53.46(5) h
| β<sup>-</sup>
| <sup>115m</sup>In
| 1/2+
|
|
|-
| style="text-indent:1em" | <sup>115m</sup>Cd
| colspan="3" style="text-indent:2em" | 181.0(5) keV
| 44.56(24) d
| β<sup>-</sup>
| <sup>115m</sup>In
| (11/2)-
|
|
|-
| <sup>116</sup>Cd<ref group="n" name="FP" /><ref group="n" name="PN" />
| style="text-align:right" | 48
| style="text-align:right" | 68
| 115.904756(3)
| '''3.1(4)×10<sup>19</sup> a'''
| β<sup>-</sup>β<sup>-</sup>
| '''<sup>116</sup>Sn'''
| 0+
| 0.0749(18)
|
|-
| <sup>117</sup>Cd
| style="text-align:right" | 48
| style="text-align:right" | 69
| 116.907219(4)
| 2.49(4) h
| β<sup>-</sup>
| <sup>117m</sup>In
| 1/2+
|
|
|-
| style="text-indent:1em" | <sup>117m</sup>Cd
| colspan="3" style="text-indent:2em" | 136.4(2) keV
| 3.36(5) h
| β<sup>-</sup>
| <sup>117m</sup>In
| (11/2)-
|
|
|-
| <sup>118</sup>Cd
| style="text-align:right" | 48
| style="text-align:right" | 70
| 117.906915(22)
| 50.3(2) min
| β<sup>-</sup>
| <sup>118</sup>In
| 0+
|
|
|-
| <sup>119</sup>Cd
| style="text-align:right" | 48
| style="text-align:right" | 71
| 118.90992(9)
| 2.69(2) min
| β<sup>-</sup>
| <sup>119m</sup>In
| (3/2+)
|
|
|-
| style="text-indent:1em" | <sup>119m</sup>Cd
| colspan="3" style="text-indent:2em" | 146.54(11) keV
| 2.20(2) min
| β<sup>-</sup>
| <sup>119m</sup>In
| (11/2-)#
|
|
|-
| <sup>120</sup>Cd
| style="text-align:right" | 48
| style="text-align:right" | 72
| 119.90985(2)
| 50.80(21) s
| β<sup>-</sup>
| <sup>120</sup>In
| 0+
|
|
|-
| <sup>121</sup>Cd
| style="text-align:right" | 48
| style="text-align:right" | 73
| 120.91298(9)
| 13.5(3) s
| β<sup>-</sup>
| <sup>121m</sup>In
| (3/2+)
|
|
|-
| style="text-indent:1em" | <sup>121m</sup>Cd
| colspan="3" style="text-indent:2em" | 214.86(15) keV
| 8.3(8) s
| β<sup>-</sup>
| <sup>121m</sup>In
| (11/2-)
|
|
|-
| <sup>122</sup>Cd
| style="text-align:right" | 48
| style="text-align:right" | 74
| 121.91333(5)
| 5.24(3) s
| β<sup>-</sup>
| <sup>122</sup>In
| 0+
|
|
|-
| <sup>123</sup>Cd
| style="text-align:right" | 48
| style="text-align:right" | 75
| 122.91700(4)
| 2.10(2) s
| β<sup>-</sup>
| <sup>123m</sup>In
| (3/2)+
|
|
|-
| rowspan=2 style="text-indent:1em" | <sup>123m</sup>Cd
| rowspan=2 colspan="3" style="text-indent:2em" | 316.52(23) keV
| rowspan=2|1.82(3) s
| β<sup>-</sup>
| <sup>123</sup>In
| rowspan=2|(11/2-)
| rowspan=2|
| rowspan=2|
|- 
| IT
| <sup>23</sup>Cd
|-
| <sup>124</sup>Cd
| style="text-align:right" | 48
| style="text-align:right" | 76
| 123.91765(7)
| 1.25(2) s
| β<sup>-</sup>
| <sup>124</sup>In
| 0+
|
|
|-
| <sup>125</sup>Cd
| style="text-align:right" | 48
| style="text-align:right" | 77
| 124.92125(7)
| 0.65(2) s
| β<sup>-</sup>
| <sup>125m</sup>In
| (3/2+)#
|
|
|-
| style="text-indent:1em" | <sup>125m</sup>Cd
| colspan="3" style="text-indent:2em" | 50(70) keV
| 570(90) ms
| β<sup>-</sup>
| <sup>125</sup>In
| 11/2-#
|
|
|-
| <sup>126</sup>Cd
| style="text-align:right" | 48
| style="text-align:right" | 78
| 125.92235(6)
| 0.515(17) s
| β<sup>-</sup>
| <sup>126</sup>In
| 0+
|
|
|-
| <sup>127</sup>Cd
| style="text-align:right" | 48
| style="text-align:right" | 79
| 126.92644(8)
| 0.37(7) s
| β<sup>-</sup>
| <sup>127m</sup>In
| (3/2+)
|
|
|-
| <sup>128</sup>Cd
| style="text-align:right" | 48
| style="text-align:right" | 80
| 127.92776(32)
| 0.28(4) s
| β<sup>-</sup>
| <sup>128</sup>In
| 0+
|
|
|-
| rowspan=2|<sup>129</sup>Cd
| rowspan=2 style="text-align:right" | 48
| rowspan=2 style="text-align:right" | 81
| rowspan=2|128.93215(32)#
| rowspan=2|242(8) ms
| β<sup>-</sup> (>99.9%)
| <sup>129</sup>In
| rowspan=2|3/2+#
| rowspan=2|
| rowspan=2|
|-
| IT (<0.1%)
| <sup>129</sup>Cd
|-
| style="text-indent:1em" | <sup>129m</sup>Cd
| colspan="3" style="text-indent:2em" | 0(200)# keV
| 104(6) ms
|
|
| 11/2-#
|
|
|-
| rowspan=2|<sup>130</sup>Cd
| rowspan=2 style="text-align:right" | 48
| rowspan=2 style="text-align:right" | 82
| rowspan=2|129.9339(3)
| rowspan=2|162(7) ms
| β<sup>-</sup> (96%)
| <sup>130</sup>In
| rowspan=2|0+
| rowspan=2|
| rowspan=2|
|-
| β<sup>-</sup>, [[중성자 방출|n]] (4%)
| <sup>129</sup>In
|-
| <sup>131</sup>Cd
| style="text-align:right" | 48
| style="text-align:right" | 83
| 130.94067(32)#
| 68(3) ms
|
|
| 7/2-#
|
|
|-
| <sup>132</sup>Cd
| style="text-align:right" | 48
| style="text-align:right" | 84
| 131.94555(54)#
| 97(10) ms
|
|
| 0+
|
|
|}

<references group="n" />

{{동위 원소 색인}}

{{전거 통제}}

[[분류:카드뮴|동위 원소]]
[[분류:카드뮴 동위 원소| ]]
[[분류:원소별 동위 원소 목록]]