{{위키데이터 속성 추적}}
[[아이오딘]](I)의 알려진 [[동위 원소]]는 모두 37개 핵종으로, 그 중에서 아이오딘-127(<sup>127</sup>I)만이 안정 동위 원소이다.

가장 수명이 긴 방사성 동위 원소는 <sup>129</sup>I로, 반감기는 1570만년이나 된다. [[우주선 (물리)|우주선]] 등에 의해 생성되는 <sup>129</sup>I의 양은 매우 미미해서, 자연 상태로 존재하는 아이오딘은 거의 대부분이 <sup>127</sup>I이다.

다른 아이오딘 동위 원소의 반감기는 60일 이내이며, 이 중 일부는 의학 등에서 추적자나 약재로 사용된다.

== 표 ==
{| class="wikitable" style="font-size:95%; white-space:nowrap"
! rowspan="2" | 핵종<br />기호
! Z([[양성자|p]])
! N([[중성자|n]])
! &nbsp;<br />동위 원소 질량 (u)<br />&nbsp;
! rowspan="2" | 반감기
! rowspan="2" | 붕괴<br />방식<ref>http://www.nucleonica.net/unc.aspx</ref><ref group="n">약자:<br />ε: [[전자 포획]]<br />IT: [[이성질핵 전이]]</ref>
! rowspan="2" | 붕괴<br />생성물<ref group="n">굵은 글꼴은 안정 동위 원소, 굵은 기울임꼴은 감기가 우주의 나이보다 긴 동위 원소(거의 안정적)</ref>
! rowspan="2" | 핵<br />스핀
! rowspan="2" | 전형적<br />동위 원소<br />구성비<br />(몰 분율)
! rowspan="2" | 자연적<br />구성비<br />변동 범위<br />(몰 분율)
|-
! colspan="3" | 들뜬 에너지
|-
| rowspan=3|<sup>108</sup>I
| rowspan=3 style="text-align:right" | 53
| rowspan=3 style="text-align:right" | 55
| rowspan=3|107.94348(39)#
| rowspan=3|36(6) ms
| [[알파 붕괴|α]] (90%)
| <sup>104</sup>Sb
| rowspan=3|(1)#
| rowspan=3|
| rowspan=3|
|-
| [[베타 붕괴|β<sup>+</sup>]] (9%)
| <sup>108</sup>Te
|-
| [[양성자 방출|p]] (1%)
| <sup>107</sup>Te
|-
| rowspan=2|<sup>109</sup>I
| rowspan=2 style="text-align:right" | 53
| rowspan=2 style="text-align:right" | 56
| rowspan=2|108.93815(11)
| rowspan=2|103(5) µs
| p (99.5%)
| <sup>108</sup>Te
| rowspan=2|(5/2+)
| rowspan=2|
| rowspan=2|
|-
| α (0.5%)
| <sup>105</sup>Sb
|-
| rowspan=4|<sup>110</sup>I
| rowspan=4 style="text-align:right" | 53
| rowspan=4 style="text-align:right" | 57
| rowspan=4|109.93524(33)#
| rowspan=4|650(20) ms
| β<sup>+</sup> (83%)
| <sup>110</sup>Te
| rowspan=4|1+#
| rowspan=4|
| rowspan=4|
|-
| α (17%)
| <sup>106</sup>Sb
|-
| β<sup>+</sup>, p (11%)
| <sup>109</sup>Sb
|-
| β<sup>+</sup>, α (1.09%)
| <sup>106</sup>Sn
|-
| rowspan=2|<sup>111</sup>I
| rowspan=2 style="text-align:right" | 53
| rowspan=2 style="text-align:right" | 58
| rowspan=2|110.93028(32)#
| rowspan=2|2.5(2) s
| β<sup>+</sup> (99.91%)
| <sup>111</sup>Te
| rowspan=2|(5/2+)#
| rowspan=2|
| rowspan=2|
|-
| α (0.088%)
| <sup>107</sup>Sb
|-
| rowspan=4|<sup>112</sup>I
| rowspan=4 style="text-align:right" | 53
| rowspan=4 style="text-align:right" | 59
| rowspan=4|111.92797(23)#
| rowspan=4|3.42(11) s
| β<sup>+</sup> (99.01%)
| <sup>112</sup>Te
| rowspan=4|
| rowspan=4|
| rowspan=4|
|-
| β<sup>+</sup>, p (0.88%)
| <sup>111</sup>Sb
|-
| β<sup>+</sup>, α (0.104%)
| <sup>108</sup>Sn
|-
| α (0.0012%)
| <sup>108</sup>Sb
|-
| rowspan=3|<sup>113</sup>I
| rowspan=3 style="text-align:right" | 53
| rowspan=3 style="text-align:right" | 60
| rowspan=3|112.92364(6)
| rowspan=3|6.6(2) s
| β<sup>+</sup> (100%)
| <sup>113</sup>Te
| rowspan=3|5/2+#
| rowspan=3|
| rowspan=3|
|-
| α (3.3×10<sup>−7</sup>%)
| <sup>109</sup>Sb
|-
| β<sup>+</sup>, α
| <sup>109</sup>Sn
|-
| rowspan=2|<sup>114</sup>I
| rowspan=2 style="text-align:right" | 53
| rowspan=2 style="text-align:right" | 61
| rowspan=2|113.92185(32)#
| rowspan=2|2.1(2) s
| β<sup>+</sup>
| <sup>114</sup>Te
| rowspan=2|1+
| rowspan=2|
| rowspan=2|
|-
| β<sup>+</sup>, p (드묾)
| <sup>113</sup>Sb
|-
| rowspan=2 style="text-indent:1em" | <sup>114m</sup>I
| rowspan=2 colspan="3" style="text-indent:2em" | 265.9(5) keV
| rowspan=2|6.2(5) s
| β<sup>+</sup> (91%)
| <sup>114</sup>Te
| rowspan=2|(7)
| rowspan=2|
| rowspan=2|
|-
| [[이성질핵 전이|IT]] (9%)
| <sup>114</sup>I
|-
| <sup>115</sup>I
| style="text-align:right" | 53
| style="text-align:right" | 62
| 114.91805(3)
| 1.3(2) min
| β<sup>+</sup>
| <sup>115</sup>Te
| (5/2+)#
|
|
|-
| <sup>116</sup>I
| style="text-align:right" | 53
| style="text-align:right" | 63
| 115.91681(10)
| 2.91(15) s
| β<sup>+</sup>
| <sup>116</sup>Te
| 1+
|
|
|-
| style="text-indent:1em" | <sup>116m</sup>I
| colspan="3" style="text-indent:2em" | 400(50)# keV
| 3.27(16) µs
|
|
| (7-)
|
|
|-
| <sup>117</sup>I
| style="text-align:right" | 53
| style="text-align:right" | 64
| 116.91365(3)
| 2.22(4) min
| β<sup>+</sup>
| <sup>117</sup>Te
| (5/2)+
|
|
|-
| <sup>118</sup>I
| style="text-align:right" | 53
| style="text-align:right" | 65
| 117.913074(21)
| 13.7(5) min
| β<sup>+</sup>
| <sup>118</sup>Te
| 2-
|
|
|-
| rowspan=2 style="text-indent:1em" | <sup>118m</sup>I
| rowspan=2 colspan="3" style="text-indent:2em" | 190.1(10) keV
| rowspan=2|8.5(5) min
| β<sup>+</sup>
| <sup>118</sup>Te
| rowspan=2|(7-)
| rowspan=2|
| rowspan=2|
|-
| IT (드묾)
| <sup>118</sup>I
|-
| <sup>119</sup>I
| style="text-align:right" | 53
| style="text-align:right" | 66
| 118.91007(3)
| 19.1(4) min
| β<sup>+</sup>
| <sup>119</sup>Te
| 5/2+
|
|
|-
| <sup>120</sup>I
| style="text-align:right" | 53
| style="text-align:right" | 67
| 119.910048(19)
| 81.6(2) min
| β<sup>+</sup>
| '''<sup>120</sup>Te'''
| 2-
|
|
|-
| style="text-indent:1em" | <sup>120m1</sup>I
| colspan="3" style="text-indent:2em" | 72.61(9) keV
| 228(15) ns
|
|
| (1+,2+,3+)
|
|
|-
| style="text-indent:1em" | <sup>120m2</sup>I
| colspan="3" style="text-indent:2em" | 320(15) keV
| 53(4) min
| β<sup>+</sup>
| <sup>120</sup>Te
| (7-)
|
|
|-
| <sup>121</sup>I
| style="text-align:right" | 53
| style="text-align:right" | 68
| 120.907367(11)
| 2.12(1) h
| β<sup>+</sup>
| <sup>121</sup>Te
| 5/2+
|
|
|-
| style="text-indent:1em" | <sup>121m</sup>I
| colspan="3" style="text-indent:2em" | 2376.9(4) keV
| 9.0(15) µs
|
|
|
|
|
|-
| <sup>122</sup>I
| style="text-align:right" | 53
| style="text-align:right" | 69
| 121.907589(6)
| 3.63(6) min
| β<sup>+</sup>
| '''<sup>122</sup>Te'''
| 1+
|
|
|-
| [[아이오딘-123|<sup>123</sup>I]]<ref group="n" name="Med">[[핵의학]]에 사용된다.</ref>
| style="text-align:right" | 53
| style="text-align:right" | 70
| 122.905589(4)
| 13.2235(19) h
| ε
| '''<sup>123</sup>Te'''
| 5/2+
|
|
|-
| <sup>124</sup>I<ref group="n" name="Med" />
| style="text-align:right" | 53
| style="text-align:right" | 71
| 123.9062099(25)
| 4.1760(3) d
| β<sup>+</sup>
| '''<sup>124</sup>Te'''
| 2-
|
|
|-
| [[아이오딘-125|<sup>125</sup>I]]<ref group="n" name="Med" />
| style="text-align:right" | 53
| style="text-align:right" | 72
| 124.9046302(16)
| 59.400(10) d
| [[전자 포획|ε]]
| '''<sup>125</sup>Te'''
| 5/2+
|
|
|-
| rowspan=2|<sup>126</sup>I
| rowspan=2 style="text-align:right" | 53
| rowspan=2 style="text-align:right" | 73
| rowspan=2|125.905624(4)
| rowspan=2|12.93(5) d
| β<sup>+</sup> (56.3%)
| '''<sup>126</sup>Te'''
| rowspan=2|2-
| rowspan=2|
| rowspan=2|
|-
| β<sup>-</sup> (44.7%)
| '''<sup>126</sup>Xe'''
|-
| <sup>127</sup>I<ref group="n" name="FP">[[핵분열 생성물]]</ref>
| style="text-align:right" | 53
| style="text-align:right" | 74
| 126.904473(4)
| colspan=3 align=center|'''안정'''<ref group="n">이론상으로 [[자발 핵분열]]을 할 수 있다</ref>
| 5/2+
| 1.0000
|
|-
| rowspan=2|<sup>128</sup>I
| rowspan=2 style="text-align:right" | 53
| rowspan=2 style="text-align:right" | 75
| rowspan=2|127.905809(4)
| rowspan=2|24.99(2) min
| β<sup>-</sup> (93.1%)
| '''<sup>128</sup>Xe'''
| rowspan=2|1+
| rowspan=2|
| rowspan=2|
|-
| β<sup>+</sup> (6.9%)
| '''''<sup>128</sup>Te'''''
|-
| style="text-indent:1em" | <sup>128m1</sup>I
| colspan="3" style="text-indent:2em" | 137.850(4) keV
| 845(20) ns
|
|
| 4-
|
|
|-
| style="text-indent:1em" | <sup>128m2</sup>I
| colspan="3" style="text-indent:2em" | 167.367(5) keV
| 175(15) ns
|
|
| (6)-
|
|
|-
| [[아이오딘-129|<sup>129</sup>I]]<ref group="n" name="FP" /><ref group="n">[[태양계]] 초기 역사에 일어난 사건의 연대나 지하수의 연대를 측정하는데 사용할 수 있다.</ref>
| style="text-align:right" | 53
| style="text-align:right" | 76
| 128.904988(3)
| 1.57(4)×10<sup>7</sup> a
| β<sup>-</sup>
| '''<sup>129</sup>Xe'''
| 7/2+
| 미량<ref group="n">미량 동위 원소이며, [[방사능 오염]]의 결과물로 생성되기도 한다.</ref>
|
|-
| <sup>130</sup>I
| style="text-align:right" | 53
| style="text-align:right" | 77
| 129.906674(3)
| 12.36(1) h
| β<sup>-</sup>
| '''<sup>130</sup>Xe'''
| 5+
|
|
|-
| rowspan=2 style="text-indent:1em" | <sup>130m1</sup>I
| rowspan=2 colspan="3" style="text-indent:2em" | 39.9525(13) keV
| rowspan=2|8.84(6) min
| IT (84%)
| <sup>130</sup>I
| rowspan=2|2+
| rowspan=2|
| rowspan=2|
|-
| β<sup>-</sup> (16%)
| '''<sup>130</sup>Xe'''
|-
| style="text-indent:1em" | <sup>130m2</sup>I
| colspan="3" style="text-indent:2em" | 69.5865(7) keV
| 133(7) ns
|
|
| (6)-
|
|
|-
| style="text-indent:1em" | <sup>130m3</sup>I
| colspan="3" style="text-indent:2em" | 82.3960(19) keV
| 315(15) ns
|
|
| -
|
|
|-
| style="text-indent:1em" | <sup>130m4</sup>I
| colspan="3" style="text-indent:2em" | 85.1099(10) keV
| 254(4) ns
|
|
| (6)-
|
|
|-
| [[아이오딘-131|<sup>131</sup>I]]<ref group="n" name="FP" /><ref group="n" name="Med" />
| style="text-align:right" | 53
| style="text-align:right" | 78
| 130.9061246(12)
| 8.02070(11) d
| β<sup>-</sup>
| '''<sup>131</sup>Xe'''
| 7/2+
|
|
|-
| <sup>132</sup>I
| style="text-align:right" | 53
| style="text-align:right" | 79
| 131.907997(6)
| 2.295(13) h
| β<sup>-</sup>
| '''<sup>132</sup>Xe'''
| 4+
|
|
|-
| rowspan=2 style="text-indent:1em" | <sup>132m</sup>I
| rowspan=2 colspan="3" style="text-indent:2em" | 104(12) keV
| rowspan=2|1.387(15) h
| IT (86%)
| <sup>132</sup>I
| rowspan=2|(8-)
| rowspan=2|
| rowspan=2|
|-
| β<sup>-</sup> (14%)
| '''<sup>132</sup>Xe'''
|-
| <sup>133</sup>I
| style="text-align:right" | 53
| style="text-align:right" | 80
| 132.907797(5)
| 20.8(1) h
| β<sup>-</sup>
| <sup>133</sup>Xe
| 7/2+
|
|
|-
| style="text-indent:1em" | <sup>133m1</sup>I
| colspan="3" style="text-indent:2em" | 1634.174(17) keV
| 9(2) s
| IT
| <sup>133</sup>I
| (19/2-)
|
|
|-
| style="text-indent:1em" | <sup>133m2</sup>I
| colspan="3" style="text-indent:2em" | 1729.160(17) keV
| ~170 ns
|
|
| (15/2-)
|
|
|-
| <sup>134</sup>I
| style="text-align:right" | 53
| style="text-align:right" | 81
| 133.909744(9)
| 52.5(2) min
| β<sup>-</sup>
| '''<sup>134</sup>Xe'''
| (4)+
|
|
|-
| rowspan=2 style="text-indent:1em" | <sup>134m</sup>I
| rowspan=2 colspan="3" style="text-indent:2em" | 316.49(22) keV
| rowspan=2|3.52(4) min
| IT (97.7%)
| <sup>134</sup>I
| rowspan=2|(8)-
| rowspan=2|
| rowspan=2|
|-
| β<sup>-</sup> (2.3%)
| '''<sup>134</sup>Xe'''
|-
| <sup>135</sup>I<ref group="n">[[원자로]]에서 [[텔루륨-135|<sup>135</sup>Te]]의 붕괴 생성물로 생성되며, 다시 [[제논-135|<sup>135</sup>Xe]]로 붕괴한다. 원자로에서 이것이 쌓이도록 방치하면 [[제논 독작용]]({{llang|en|Xenon poisoning 또는 Iodine pit}})으로 인해 원자로가 정지될 수 있다.</ref>
| style="text-align:right" | 53
| style="text-align:right" | 82
| 134.910048(8)
| 6.57(2) h
| β<sup>-</sup>
| [[제논-135|<sup>135</sup>Xe]]
| 7/2+
|
|
|-
| <sup>136</sup>I
| style="text-align:right" | 53
| style="text-align:right" | 83
| 135.91465(5)
| 83.4(10) s
| β<sup>-</sup>
| '''''<sup>136</sup>Xe'''''
| (1-)
|
|
|-
| style="text-indent:1em" | <sup>136m</sup>I
| colspan="3" style="text-indent:2em" | 650(120) keV
| 46.9(10) s
| β<sup>-</sup>
| '''''<sup>136</sup>Xe'''''
| (6-)
|
|
|-
| rowspan=2|<sup>137</sup>I
| rowspan=2 style="text-align:right" | 53
| rowspan=2 style="text-align:right" | 84
| rowspan=2|136.917871(30)
| rowspan=2|24.13(12) s
| β<sup>-</sup> (92.86%)
| <sup>137</sup>Xe
| rowspan=2|(7/2+)
| rowspan=2|
| rowspan=2|
|-
| β<sup>-</sup>, [[중성자 방출|n]] (7.14%)
| '''''<sup>136</sup>Xe'''''
|-
| rowspan=2|<sup>138</sup>I
| rowspan=2 style="text-align:right" | 53
| rowspan=2 style="text-align:right" | 85
| rowspan=2|137.92235(9)
| rowspan=2|6.23(3) s
| β<sup>-</sup> (94.54%)
| <sup>138</sup>Xe
| rowspan=2|(2-)
| rowspan=2|
| rowspan=2|
|-
| β<sup>-</sup>, n (5.46%)
| <sup>137</sup>Xe
|-
| rowspan=2|<sup>139</sup>I
| rowspan=2 style="text-align:right" | 53
| rowspan=2 style="text-align:right" | 86
| rowspan=2|138.92610(3)
| rowspan=2|2.282(10) s
| β<sup>-</sup> (90%)
| <sup>139</sup>Xe
| rowspan=2|7/2+#
| rowspan=2|
| rowspan=2|
|-
| β<sup>-</sup>, n (10%)
| <sup>138</sup>Xe
|-
| rowspan=2|<sup>140</sup>I
| rowspan=2 style="text-align:right" | 53
| rowspan=2 style="text-align:right" | 87
| rowspan=2|139.93100(21)#
| rowspan=2|860(40) ms
| β<sup>-</sup> (90.7%)
| <sup>140</sup>Xe
| rowspan=2|(3)(-#)
| rowspan=2|
| rowspan=2|
|-
| β<sup>-</sup>, n (9.3%)
| <sup>139</sup>Xe
|-
| rowspan=2|<sup>141</sup>I
| rowspan=2 style="text-align:right" | 53
| rowspan=2 style="text-align:right" | 88
| rowspan=2|140.93503(21)#
| rowspan=2|430(20) ms
| β<sup>-</sup> (78%)
| <sup>141</sup>Xe
| rowspan=2|7/2+#
| rowspan=2|
| rowspan=2|
|-
| β<sup>-</sup>, n (22%)
| <sup>140</sup>Xe
|-
| rowspan=2|<sup>142</sup>I
| rowspan=2 style="text-align:right" | 53
| rowspan=2 style="text-align:right" | 89
| rowspan=2|141.94018(43)#
| rowspan=2|~200 ms
| β<sup>-</sup> (75%)
| <sup>142</sup>Xe
| rowspan=2|2-#
| rowspan=2|
| rowspan=2|
|-
| β<sup>-</sup>, n (25%)
| <sup>141</sup>Xe
|-
| <sup>143</sup>I
| style="text-align:right" | 53
| style="text-align:right" | 90
| 142.94456(43)#
| 100# ms [>300 ns]
| β<sup>-</sup>
| <sup>143</sup>Xe
| 7/2+#
|
|
|-
| <sup>144</sup>I
| style="text-align:right" | 53
| style="text-align:right" | 91
| 143.94999(54)#
| 50# ms [>300 ns]
| β<sup>-</sup>
| <sup>144</sup>Xe
| 1-#
|
|
|}

== 각주 ==
<references/>
; 내용주
<references group="n" />

{{동위 원소 색인}}

{{전거 통제}}

[[분류:아이오딘 동위 원소| ]]
[[분류:아이오딘|동위 원소]]
[[분류:원소별 동위 원소 목록]]
[[분류:원자력 안전]]