actinon

/ak-tuh-non/US // ˈæk təˌnɒn //UK // (ˈæktɪˌnɒn) //

锕锕,锕锕锕,锕锕锕锕

Definitions

n.名词 noun

1
Chemistry.
- : a chemically inert, gaseous, short-lived isotope of radon that is a member of the actinium series. Symbol: An; atomic number: 86; atomic weight: 219.