Predict the type of radioactive decay process that is likely for each of the following nuclides.polonium-212 alpha emissionbeta emissionpositron emission boron-8 alpha emissionbeta emissionpositron emission radium-226 alpha emissionbeta emissionpositron emission

1) on alpha emission atomic number of the nuclide decreases by 2 and mass number decreases by 4 because alpha particle has u not mass and 2 unit charge (2He4) 2) beat emission is due to splitting of a neutron in to proton and an electron n10→ H11+ e0-1 so mass number remain same and atomic number of the nuclide increases by1 ( beta is negatively charged particle that is an electron) 3) when a nuclide emit positron , proton split in to a neutron and a positron 0H11→n10+ e0+1( positron) hence mass number remain same but atomic number decreases by 1 unitalpha decay of Po : atomic number of Po is 84 and mass number is given 212 : 1)alpha decay ; P84o212→ P82b208 + H2e4 stated in the above when an alpha particle is emitted mass number decreases by 4 and atomic number by2 hence atomic number 84 become 82 and it is lead 2) beta emission ; P84o212→ A85t212 + e0-1 (beta) atomic number increased by one the element formed is astatine 3) postron decay : P84o212→ B83i212 + e0+1 B8 1) alpha decay : B85 → L3i4 + +H2e4(α) 2) β - decay : B85 → C86 + +e0-1(β) 3) positron decay: B85 → B4e8 + e0+188Ra226 1) alpha decay : R88a226 → R86n222 + H2e4 2) beta decay : R88a226 → A89c226 + e0-1(β) 3) positron decay: R88a226 → F87r226 + e0+1