Isotopes of Fermium (Fm)

Symbol Mass Number Relative Atomic Mass Isotopic Composition
242Fm 242 242.07343(43)#
243Fm 243 243.07435(23)#
244Fm 244 244.07408(30)#
245Fm 245 245.07539(30)#
246Fm 246 246.075300(40)
247Fm 247 247.07685(15)#
248Fm 248 248.077195(13)
249Fm 249 249.07903(11)#
250Fm 250 250.079521(13)
251Fm 251 251.081575(9)
252Fm 252 252.082467(6)
253Fm 253 253.085185(4)
254Fm 254 254.0868542(30)
255Fm 255 255.089962(5)
256Fm 256 256.091773(8)
257Fm 257 257.095105(7)
258Fm 258 258.09708(22)#
259Fm 259 259.10060(30)#
260Fm 260 260.10268(54)#

Legend

Mass Number
Relative Atomic Mass
Isotopic Composition
Standard Atomic Weight
Fm: