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rubidium
(redirected from rubidium 82)

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rubidium /ru·bid·i·um/ (roo-bid´e-um) a chemical element, at. no. 37, symbol Rb.

rubidium 82 a radioactive isotope of rubidium having a half-life of 1.273 minutes and decaying by positron emission; used as a tracer in positron emission tomography.

ru·bid·i·um (r

-b

d

-

m)

n. Symbol Rb

A soft metallic element of the alkali group. Atomic number 37.

rubidium

a chemical element, atomic number 37, atomic weight 85.47, symbol Rb. See Table 6.

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