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EASYLIFE5252 | 20:24 Mon 14th Sep 2009 | Quizzes & Puzzles
3 Answers
17a stable negatively charged elementary particle present in all atoms, one of the leptons [8 ]
4d black compound of sulphur with silver,lead or copper used to fill engraved designs onmetal surfaces[ 6 ]
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17a Electron----------4d Niello
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many thanks octogenaerian
niello

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