What is the mass number of chlorine?

An occluded front moves over the farmland that has been experiencing drought conditions. what change in weather will this front likely bring? a. gray skies, but no rain b. an extended period of rain c. more dry air and sunny skies d. violent, short-lived thunderstorms

In an energy pyramid, which level has the most available energy?

Which of the following elements would you expect to have the lowest ionization energy value? fluorine, lithium, neon, nitrogen