Fluorine's atomic number is 9 and its atomic mass is 19. how many neutrons does fluorine have

This isotope of fluorine has 9 protons, 9 electrons and 10 neutrons. so then adds up to how many it have

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water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.