Isotopes of Gadolinium (Gd)

Symbol Mass Number Relative Atomic Mass Isotopic Composition
134Gd 134 133.95537(43)#
135Gd 135 134.95257(54)#
136Gd 136 135.94734(43)#
137Gd 137 136.94502(43)#
138Gd 138 137.94012(21)#
139Gd 139 138.93824(21)#
140Gd 140 139.933670(30)
141Gd 141 140.932126(21)
142Gd 142 141.928120(30)
143Gd 143 142.92675(22)
144Gd 144 143.922960(30)
145Gd 145 144.921709(20)
146Gd 146 145.918311(5)
147Gd 147 146.919094(3)
148Gd 148 147.918115(3)
149Gd 149 148.919341(4)
150Gd 150 149.918659(7)
151Gd 151 150.920348(4)
152Gd 152 151.9197910(27) 0.0020(1)
153Gd 153 152.9217495(27)
154Gd 154 153.9208656(27) 0.0218(3)
155Gd 155 154.9226220(27) 0.1480(12)
156Gd 156 155.9221227(27) 0.2047(9)
157Gd 157 156.9239601(27) 0.1565(2)
158Gd 158 157.9241039(27) 0.2484(7)
159Gd 159 158.9263887(27)
160Gd 160 159.9270541(27) 0.2186(19)
161Gd 161 160.9296692(29)
162Gd 162 161.930985(5)
163Gd 163 162.93399(32)#
164Gd 164 163.93586(43)#
165Gd 165 164.93938(54)#
166Gd 166 165.94160(64)#
167Gd 167 166.94557(64)#
168Gd 168 167.94836(75)#
169Gd 169 168.95287(86)#

Legend

Mass Number
Relative Atomic Mass
Isotopic Composition
Standard Atomic Weight
Gd: 157.25(3)
Notes (Gd)
m:

Isotopic Composition