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lfontes lfontes
wrote...
11 years ago
12. What element results if two protons and two neutrons are ejected from a radium nucleus?
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wrote...
11 years ago
Radium atomic number = 88 (+138 neutrons) (226 at wt)
lose 2 protons and atomic number = 86 (Rn radon)
lose 2 neutrons (136-2=134) and at wt = 222 (86+134) = radon
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