# Internal Conversion Coefficient/Decay % HELP

"In 97.7% of disintegrations 123I decays by electron capture to an excited state of 123Te, which has an energy of 159keV. Gamma rays of energy 159keV are emitted following 82.9% of decays. What's the internal conversion coefficient for this de-excitation?"

I know that a=Ne/Ny(gamma), but I'm kind of confused here about the percentage of the decays of the e- capture & gamma emission. Is it 97.7%/17.1%=5.713?

Any help would be greatly appreciated!

gamma emmission 82.9%
rest x-ray emmission + flrorascence yeild

so icc = (17.1/82.9)/ (florascence yeild)

the 97% is just the percentage of time iodine decays through electron capture, we are interested only in tellurium decay!!.

This is for now my understanding