Isotopes of the same element differ in their number of . protons

neutrons

nuclei

electrons

Which of the following group roles has the responsibility of keeping the discussion on schedule?

Outline (1) (2) i. (3) a. (4) 1. (5) 2. 3. choose the best answer from the choices below to match with (3) from the outline above. a. detail b. introduction c. subpoint 1 d. main point 1 select the best answer from the choices provided a b c d

Need some on this. which answer is it?