Which is likely the most abundant stable isotope of gallium (Ga)? Chemistry Which is likely the most abundant stable isotope of gallium (Ga)? A) ^69Ga B) ^71Ga C) Tm-169 D) Lu-175 E) ^67Ga (decay half life = 3.3 d by gamma emission) Answer: A Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+