Respuesta :
A fluorine element has 7 valence electrons.
A stable fluorine ion should have 8 valence electrons.
So fluorine gains an extra electron.
Thus, the most stable monatomic ion is [tex]F^{-}[/tex]
Answer: The stable mono atomic ion of fluorine is [tex]F^-[/tex]
Explanation:
Mono atomic ion is defined as the ion which is formed by 1 element only.
An ion is formed when an atom looses or gains electron.
- When an atom looses electrons, it will form a positive ion known as cation.
- When an atom gains electrons, it will form a negative ion known as anion.
Fluorine is the 9th element in the periodic table. The electronic configuration of this element is [tex]1s^22s^22p^5[/tex]
This element will gain 1 electron to form [tex]F^-[/tex] ion.
Hence, the stable mono atomic ion of fluorine is [tex]F^-[/tex]
