astatine

astatine

 [as´tah-tēn]

a chemical element, atomic number 85, atomic weight 210, symbol At. (See Appendix 6.)

as·ta·tine (At),

(as'tă-tēn),

An artificial radioactive element of the halogen series; atomic no. 85, atomic wt. 211.

[G. astatos, unstable]

astatine

/as·ta·tine/ (as´tah-tēn) a chemical element, at. no. 85, symbol At.

astatine (At)

Etymology: Gk, astasis, unsteady

a very unstable, radioactive element that occurs naturally in tiny amounts. Its atomic number is 85; the atomic mass of its longest lived isotope is 210.

as·ta·tine

(At) (as'tă-tēn)

An artificial radioactive element of the halogen series; atomic no. 85, atomic wt. 211.

[G. astatos, unstable]

astatine

a chemical element, atomic number 85, atomic weight 210, symbol At. See Table 6.