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Bi

(Encyclopedia)Bi, symbol for the element bismuth. ...

Bk

(Encyclopedia)Bk, symbol for the element berkelium. ...

Br

(Encyclopedia)Br, symbol for the element bromine. ...

Tm

(Encyclopedia)Tm, chemical symbol for the element thulium. ...

Cf

(Encyclopedia)Cf, symbol for the element californium. ...

darmstadtium

(Encyclopedia)darmstadtium, artificially produced radioactive chemical element; symbol Ds; at. no. 110; mass number of most stable isotope 281; m.p., b.p., sp. gr., and valence unknown. Situated in Group 10 of the ...

Lw

(Encyclopedia)Lw, former symbol of the element lawrencium, now Lr. ...

Mv

(Encyclopedia)Mv, former symbol of the element mendelevium, now Md. ...

radon

(Encyclopedia)radon rāˈdŏn [key], gaseous radioactive chemical element; symbol Rn; at. no. 86; mass no. of most stable isotope 222; m.p. about −71℃; b.p. −61.8℃; density 9.73 grams per liter at STP; vale...

seaborgium

(Encyclopedia)seaborgium sēbôrˈgēəm [key], artificially produced radioactive chemical element; symbol Sg; at. no. 106; mass number of most stable isotope 271; m.p., b.p., sp. gr., and valence unknown. Situated...