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English to English noun 1. a soft silvery metallic element of the alkali metal group; burns in air and reacts violently in water; occurs in carnallite and lepidolite and pollucite  source: wordnet30
2. A rare metallic element. It occurs quite widely, but in small quantities, and always combined. It is isolated as a soft yellowish white metal, analogous to potassium in most of its properties. Symbol Rb. Atomic weight, 85.2. source: webster1913
Indonesian to Indonesian n Kim 3. logam alkali berwarna putih, bersifat lunak mirip kalium; unsur dng nomor atom 37, lambang Rb, dan bobot atom 85,4678 source: kbbi3
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