Hydrogen-5
1010258
208321298
2008-04-26T14:06:47Z
J.delanoy
2372780
Reverted edits by [[Special:Contributions/62.232.24.238|62.232.24.238]] ([[User talk:62.232.24.238|talk]]) to last version by DumZiBoT
{{Infobox isotope
| alternate_names =
| symbol =H
| mass_number =5
| mass =
| num_neutrons =4
| num_protons =1
| abundance =
| halflife =8.01930x10<sup>-23</sup> seconds
| error_halflife =
| background =#eee
| text_color =
| image =
| decay_product =
| decay_symbol =
| decay_mass =
| decay_mode1 =
| decay_energy1 =
| decay_mode2 =
| decay_energy2 =
| decay_mode3 =
| decay_energy3 =
| decay_mode4 =
| decay_energy4 =
| parent =
| parent_symbol =
| parent_mass =
| parent_decay =
| parent2 =
| parent2_symbol =
| parent2_mass =
| parent2_decay =
| spin =(1/2+)
| excess_energy =
| error1 =
| binding_energy =
| error2 =
}}'''Hydrogen-5''' is a highly [[unstable isotope|unstable]] [[isotope]] of [[hydrogen]]. The nucleus consists of a proton and four neutrons. It has been synthesised in the laboratory by bombarding [[tritium]] with fast-moving tritium nuclei.<ref>[http://content.aip.org/APCPCS/v610/i1/920_1.html Cookies Required<!-- Bot generated title -->]</ref> In this experiment, the one tritium nucleus captures two neutrons from the other, becoming a nucleus with one proton and four neutrons. The remaining proton may be detected, and the existence of hydrogen-5 deduced. It decays through [[neutron emission]] and has a [[half-life]] of 8.01930×10<sup>-23</sup> [[second]]s.
== See also ==
*[[Isotopes of hydrogen]]
==References==
{{reflist}}
{{Isotope|element=Hydrogen
|lighter=[[Hydrogen-4]]
|heavier=[[Hydrogen-6]]
|before=None
|after=[[Hydrogen-3]] '''(2[[neutron emission|n]])
}}
[[Category:Isotopes of hydrogen]]
[[ko:수소-5]]
[[ru:Водород-5]]
[[zh:氫-5]]