1.

._(88)X^(288) - 3alpha + beta rarr Y. The element Y is

Answer»

`._(82) Pb^(216)`
`._(82)Pb^(217)`
`.(83)Bi^(218)`
`._(83)Bi^(216)`

SOLUTION :ATOMIC No.: `88 - (3 xx 2) + (1xx1) = 83`
Mass No.: `228 - (3 xx4) - (1 xx0) = 216`


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