Help :( i don’t understand

Choose all the answers that apply. fluorine (f) has an atomic number of 9 and an atomic weight of 18.99. fluorine has a. 9 protons b. 10 neutrons c. 18 electrons d. an atomic mass of 19 e. at least one isotope

In which phase of mitosis do the spindle fibers pull the chromosomes apart to opposite sides of the cell ?

Select the correct lewis structure for fluorine which is group 7a element?