Darmstadtium
Isotopes

Isotope
Half-life
Half-life
Half-life
Decay mode
Discovery year
Discovery reaction
Isotope
Recent publications
Ref
NUBASE 2016
Decay mode
Discovery year
Discovery reaction
267Ds
2.8 µs
-
10 µs
α
1994
209Bi(59Co,n)
269Ds
179 µs
-
230 µs
α
1994
208Pb(62Ni,n)
270Ds
100 µs
-
205 µs
α
2000
207Pb(64Ni,n)
270mDs
6 ms
-
10 ms
α
2000
207Pb(64Ni,n)
271Ds
69 ms
-
90 ms
α
1994
208Pb(64Ni,n)
271mDs
1.63 ms
-
1.7 ms
α
1994
208Pb(64Ni,n)
273Ds
0.19 ms
-
240 µs
α
1996
244Pu(34S,5n)
277Ds
3.5 ms
-
6 ms
α
2010
285Fl(—,2α)
279Ds
0.21 s
-
210 ms
SF, α
2003
287Fl(—,2α)
280Ds
6.7 ms
-
—
SF
2014
292Lv(—,3α)
281Ds
12.7 s
-
14 s
SF, α
2004
289Fl(—,2α)

Question: Which isotopes have a half life of 100µs and 69ms?
Answer: Two darmstadtium isotopes are darmstadtium-270 (100µs) and darmstadtium-271 (69ms).