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Which isotope will spontaneously decay and emit particles with a charge of +2? (1) 53Fe (3) 198Au (2) 137Cs (4) 220Fr
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Which isotope will spontaneously decay and emit particles with a charge of +2?

(1) 53Fe (3) 198Au
(2) 137Cs (4) 220Fr

User Stephen Elmendorf
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(4) 220Fr, known as Francium-220, undergoes alpha decay, which emits an alpha particle, also known as a helium nucleus, which has a charge of +2.
User Markella
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