Each elemental symbol represents one atom of the element Exa

Each elemental symbol represents one atom of the element Example Na, K. Cl etc. Atoms are incredibly small Atoms are made up of three subatomic particles: *The and are tightly bound together to form the central portion of an atom The electrons are located outside of the throughout a relatively large volume of space surrounding the small but very heavy and thought to move very rapidly - nucleus electrical charge and have a mass of 1 atomic mass unit (u). electrical charge and have a mass of 1 atomic mass unit (u). electrical charge and have a mass of 1/1837 atomic mass unit Protons carry a * . Neutrons carry . Electrons carry a (u). They move rapidly around the heavy nucleus the The atom. of an atom is equal to the number of protons in the . .It is represented by the symbol The nucleus of the atom of an atom is equal to the sum of the number of protons & neutrons in the It is represented by the symbol Based on the information given above, what is the mass number of fluorine? 19 .In the written description, fluorine is said to haveprotons and neutrons (the mass number is the sum of the numbers of protons and neutrons). .In the nuclear symbol, the number 19 is written in the position. Note: The periodic table does not show the mass number for an individual atom. It lists an average mass for a collection of atoms! are atoms that have the same number of protons in the nucleus but different numbers of neutrons. That is, they have the same different but Because they have the same number of protons in the nucleus, all isotopes of the same element have the same number of outside the nucleus.

Solution

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