Seaborgium
Isotopes

Isotope
Half-life
Decay mode
Discovery year
Reaction
258Sg
3 ms
SF
1994
209Bi(51V,2n)
259Sg
600 ms
α
1985
207Pb(54Cr,2n)
260Sg
4 ms
SF, α
1985
208Pb(54Cr,2n)
261Sg
200 ms
α, EC, SF
1985
208Pb(54Cr,n)
261mSg
92 μs
IT
2009
208Pb(54Cr,n)
262Sg
7 ms
SF, α
2001
270Ds(—,2α)
263Sg
1 s
α
1994
271Ds(—,2α)
263mSg
120 ms
α, SF
1974
249Cf(18O,4n)
264Sg
37 ms
SF
2006
238U(34Si,4n)
265Sg
8 s
α
1993
248Cm(22Ne,5n)
265mSg
16.2 s
α
1993
248Cm(22Ne,5n)
266Sg
360 ms
SF
2004
270Hs(—,α)
267Sg
1.4 min
SF, α
2004
271Hs(—,α)
269Sg
14 min
α
2010
285Fl(—,4α)
271Sg
2.4 min
α
2003
287Fl(—,4α)

Question: What isotopes of Seaborgium are produced in the ²⁴⁸Cm(²²Ne,5n) reaction? 
Answer: The isotope ²⁶⁵Sg and its isomer ²⁶⁵ᵐSg are produced in the ²⁴⁸Cm(²²Ne,5n) reaction.