The atomic number of fluorine is 9. What is the mass number of a fluorine atom with 8 neutrons?
mass# = #neutrons + #protons. (Note: # protons is the atomic number as read from the periodic table)
17
The atomic number of an element represents the number of protons in an atom's nucleus and does not change. In the case of fluorine, the atomic number is 9.
The mass number of an atom represents the total number of protons and neutrons in its nucleus. To find the mass number of a fluorine atom with 8 neutrons, we need to add the number of protons (9) and neutrons (8).
Therefore, the mass number of a fluorine atom with 8 neutrons is 9 (protons) + 8 (neutrons) = 17.
To find the mass number of a fluorine atom with 8 neutrons, we need to understand what the mass number represents. The mass number is the total number of protons and neutrons in an atom.
We know that the atomic number of fluorine is 9, which tells us that a fluorine atom has 9 protons. Since fluorine is a neutral element, the number of protons also represents the number of electrons.
Now, to determine the number of neutrons in a fluorine atom, we subtract the atomic number from the mass number.
Mass Number = Number of Protons + Number of Neutrons
In this case, the atomic number of fluorine is 9, and we have 8 neutrons. Therefore, the mass number would be:
Mass Number = 9 (Number of Protons) + 8 (Number of Neutrons) = 17
So, the mass number of a fluorine atom with 8 neutrons is 17.