SURB

SURB qurgoshim (lotini Rlumbum), Rh, elementi khimiyavin guruhi IV sistemai davrii Mendeleev; raqami atomi 82, massai atomi 207,2.

Surb 6—7 hazor sol to melod ba khalqhoi Baynannahrayn, Misr va digar mamlakatho malum bud. Onho Surbro baroi sokhtani haykalho va asbobhoi ruzgor istifoda burdaand.

Surb 1,610^-3–i massai qishri zaminro tashkil medihad. Ziyoda az 80 minerali on malum ast. Muhimtarini onho galenit — RbS, anglepit — RbCO₄, serussit — RbCO₃, piromorfit — Rb₅(RO₄)_zSI va gayra meboshand. Mikdori Surb dar biosfera nihoyat kam ast. Surb metalli vaznin va muloim; zichiash 11340 kg/m³ (20⁰S); t gud. 327,4⁰S; t jush. 1725⁰S. Surbro az RbS ba dast meorand. Baron in avval RbS-ro to ba RbO onsid namuda, bad RO-ro dar harorati na on qadar baland (to 500⁰S) to metall barqaror mekunand.

Surbro baroi istehsoli akkumulyatorho, sokhtani oloti ba gaz va moehoi vayronkunanda tobovar, ruynash kardani kabelhoi elektri istifoda mebarand. Az sababi on, ki Surbγ-nur va nurhoi rentgeniro furu mebarad, az on oloti rentgeni va baroi nigoh doshtani moddahoi radioakttivi konteynerho mesozand. RbO-ro ba tarkibi bulur va shishai optiki hamroh mekunand.