Answer :
Electron capture : It is defined as the inner orbital electrons is captured by the nucleus converting a proton into a neutron.
Generally the electron capture equation is represented as,
[tex]^A_ZX+^0_{-1}e\rightarrow ^A_{Z-1}Y+x-rays[/tex]
where,
A = atomic mass number
Z = atomic number
The electron capture equations are :
[tex]^{106}_{47}Ag+^0_{-1}e\rightarrow ^{106}_{46}Pd[/tex]
[tex]^{116}_{50}Sn+^0_{-1}e\rightarrow ^{116}_{49}In[/tex]
[tex]^{190}_{78}Pt+^0_{-1}e\rightarrow ^{190}_{77}Ir[/tex]
[tex]^{123}_{53}I+^0_{-1}e\rightarrow ^{123}_{52}Te[/tex]
