Question

Which of the following nuclides will likely undergo a beta emission for its dominant radioactive decay mode?

a) yttrium-76
b) tin-105
c) cesium-120
d) barium-146

Answer 1

barium-146

Step-by-step explanation:

Beta emission is said to occur when a neutron is converted to a proton, an electron and a neutrino. Beta emission leads to a decrease in the Neutron/Proton ratio.

Beta emission is common for heavier nuclei having a large number of neutrons. Barium-146 has 90 neutrons, hence it is more likely to undergo beta emission than other nuclides stated among the options.