Neutron source Alpha rays source for radiotherapy
Actinium is very rare and expensive; it has not common uses.
Actinium trifluoride (AcF3) has not uses.
Actinium may be used in actinium-beryllium neutron sources or in radiotherapy.
Actinium is rarely used:- as actinium-beryllium neutron source- in radiotherapy
Actinium may be used in actinium-beryllium neutron sources or in radiotherapy.
Actinium may be used in actinium-beryllium neutron sources or in radiotherapy.
Actinium may be used in actinium-beryllium neutron sources or in radiotherapy.
yes it does
No, "were" is not present perfect. Present perfect is formed by using the past participle along with the auxiliary verb "have" or "has". For example, "have gone", "has eaten".
The present perfect tense uses the past participle.
Actinium is rarely used in research laboratories. Also the isotope 225Ac is used as radiations source in radiotherapy.
Neutron source Alpha rays source for radiotherapy