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????? (???. Radium), Ra, ?????????? ??????? II ?????? ????????????? ???????, ??????? ????? 88, ??????? ????? 226,0254; ????????? ? ???????????????? ????????.

????????: ????????????; ???????? ?????????? ?????? 226Ra (?????? ??????????? 1600 ???). ??????????-????? ????????? ??????; ????????? 5,5-6,0 ?/??3, t?? 969 ??. ????????? ????? ???????.

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??????????: ??????????? ?????? ???????, ????????????? ???????? ???????? ????? ???????????? ?????????? ? ???????? ? ???????. ?????? 226Ra ? ????? ? ????????? (Be) ???? ?? ????????????? ?????????? ???????????? ?????????? ?????????.

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? ?alhimikov.net? 2006