Question

²³Ne has a neutron to proton ratio that places it above the belt of stability. What is the most likely form of decay for ²³Ne?

a) Alpha decay

b) Electron capture

c) Positron emission

d) Beta decay

e) Electron capture OR positron emission

Polonium-212 is converted into lead-208 by __________ emission.

a) alpha

b) positron

c) beta

d) electron capture

e) gamma

Answer 1

neutron proton ratio above the belt of stability means it has the neutron rich nuclei so it undergoes the beta particle and becomes the lower the neutron and increases the proton number so it undergoes the beta decay

answer => d ) beta decay

polonium 212 to lead 208 i.e it is as follows

Po-212 to   Pb-208 i.e decrease 4 units in mass number and also the atomic number for Po is 84 and the Pb is 82

so 2 units decrease in atomic number and the 4 units decrease in the mass number and this type of is called as ALPHA Decay

answer => a) alpha