Answer:
Na
Explanation:
The atomic number of sodium is 11 while that of fluorine is 9 . Thus the number of electrons in sodium are 11 while in fluorine are 9 .
The cation of an atom form when atom lose electron.
Na → Na⁺ + e⁻
it means the cation of sodium loses its one outer most electron. Thus it has 10 electron while Na atom has 11 electron.
On other hand fluorine has 9 electrons.
The anion of an atom form when it gain electron.
F + e⁻ → F⁻
Thus the number of electrons in given species are,
Na = 11
Na⁺ = 10
F = 9
F⁻ = 10
Na has more number of electrons.
