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A radioactive substance $_{88} X ^{228}(IIIA)$ emits $3 \alpha$ and $3\; \beta$ particles to form "Y". To which group of long form of the periodic table does "Y" belong ?

\[\begin {array} {1 1} (a)\;IVA & \quad (b)\;VA \\ (c)\;VIA & \quad (d)\;VIIA \end {array}\]
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(d) VIIA
answered Nov 7, 2013 by pady_1

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