Question

4. Predict whether each nuclide is more likely to decay by beta decay or positron emission a. Sb-132 b. Te 139 C. Na - 20 d. Zr - 97

Answer 1

he stobility of the naclewa of an atom is fourd to dlepend on the Ratio of Totol rumer of Nextaoris-to the toial irthe rucles icl ommbe Case Nui th hie ) velues The cmsalle Nuclei hitt, Hi )ryp values atan Stabinty anel hy geeluicina the nknbes of Nesrteoria into Proton and Wp otio dlecrenses. EX 午 Case (11): Nuclei With low ryp, values,- nluclei se stalsle. These come t Arrly the above caset, caseitu-togivern epfieris ophon a): sb-132 132 Sb 51 81 For sb NG=을 P51 №lues Ps high Sb-132.hill conde7ce beta decay

I2s OptioTe-139 OPhom( beta deto option (C) Na-, 20 Fe Na 20 at Na eca P= 40 N-ST eCa