Compared to other Cyrillic alphabets, the modern Ukrainian alphabet is the most similar to those of the other East Slavic languages: Belarusian, Russian, and Rusyn. It has retained the two early Cyrillic letters (i) and izhe () to represent related sounds /i/ and // as well as the two historical forms e () and ye (). Unique letters are these:

What's the best answer to this question: do russian and ukrainian use the same alphabet?
no