Which of these is a pair of isotopes? na+ and na cl-35 and cl-37 f and cl o2 and o3?

When you mate two plants together the terms is called? answer it fast as possible plz! i have a test tomorrow!

What is i fracture in the crust called when land move up, down or sideways

What happens when an atom of sulfur combines with two atoms of chlorine to produce sci2? a. each chlorine atom shares a pair of electrons with the sulfur atom. b. an electron is transferred from each chlorine atom to the sulfur atom. c. an electron is transferred from the sulfur atom to each chlorine atom. d. each chlorine atom shares all its valence electrons with the sulfur atom.