In the modern periodic table, what elements are listed in vertical columns

Determine the number o moles of ions/atoms/particle in the following: 2.50 miles of k2s (let me know how to do)

In saturated organic compounds, all the bonds between carbon atoms are called?

Many free radicals combine to form molecules that do not contain any unpaired electrons. the driving force for the radical–radical combination reaction is the formation of a new electron‑pair bond. consider the chemical equation. n(g)+no(g)⟶nno(g) n(g)+no(g)⟶nno(g) write lewis formulas for the reactant and product species in the chemical equation. include nonbonding electrons. n(g)n(g) select draw rings more erase select draw rings more erase select draw rings more erase n no(g)