Ethiopian Grade 11 chemistry unit 1 part 2 MAKE UP OF THE NUCLEUS | New curriculum

Ethiopian grade 11 chemistry unit 1 part 1 Atomic structure and periodic properties of the elements SUBTOPIC :-MAKE UP OF THE NUCLEUS | new curriculum new book ‪@Tutorialeducation1‬ #grade_11 #new_curriculum #chemistry #unit_1 #tutorial #part2 Join us 👇👇👇 telegram channel https://t.me/tutorial_education telegram group https://t.me/tutorial_educ don't forget to subscribe, like, share my channel 0:00 introduction 0:40 subatomic particle 10:00 Atomic mass & isotopes 19:35 Exercise 1.3