Isotopes of Terbium (Tb)

Symbol Mass Number Relative Atomic Mass Isotopic Composition
136Tb 136 135.96138(64)#
137Tb 137 136.95598(64)#
138Tb 138 137.95316(43)#
139Tb 139 138.94829(32)#
140Tb 140 139.94581(86)
141Tb 141 140.94145(11)
142Tb 142 141.93874(32)#
143Tb 143 142.935120(60)
144Tb 144 143.933050(30)
145Tb 145 144.929270(60)
146Tb 146 145.927250(50)
147Tb 147 146.924045(13)
148Tb 148 147.924272(15)
149Tb 149 148.923246(5)
150Tb 150 149.923660(8)
151Tb 151 150.923103(5)
152Tb 152 151.924070(40)
153Tb 153 152.923435(5)
154Tb 154 153.924680(50)
155Tb 155 154.923505(13)
156Tb 156 155.924747(5)
157Tb 157 156.9240246(27)
158Tb 158 157.9254131(28)
159Tb 159 158.9253468(27) 1.0000
160Tb 160 159.9271676(27)
161Tb 161 160.9275699(28)
162Tb 162 161.929490(40)
163Tb 163 162.930648(5)
164Tb 164 163.93335(11)
165Tb 165 164.93488(21)#
166Tb 166 165.93799(11)
167Tb 167 166.94005(43)#
168Tb 168 167.94364(54)#
169Tb 169 168.94622(64)#
170Tb 170 169.95025(75)#
171Tb 171 170.95330(86)#

Legend

Mass Number
Relative Atomic Mass
Isotopic Composition
Standard Atomic Weight
Tb: 158.92535(2)

Isotopic Composition