hundereds
1
7 valence electrons
Since fluorine and chlorine are in family 7A, they each have 7 valence electrons. The number of the family corresponds to the number of valence electrons.
1
A fluorine atom has 7 valance electrons. This can be identified by looking which group fluorine is located, which is group 7. However when the atoms get bigger this rule does not apply so easily.
There are 7 valence electrons in an NF3 molecule. Nitrogen has 5 valence electrons and each fluorine atom contributes 1 valence electron, totaling 3 electrons for the 3 fluorine atoms.
Fluorine has 7 valence electrons, which are the electrons in the outermost shell of an atom. These electrons are involved in chemical bonding and determine the reactivity of the element.
flurine has atomic no. 9 so its electronic configaration is 2,7. Its valance shell has 7 electrons
There are 27 valance electrons.
2 valance electrons
in a normal F- ion there are 10 electrons total (but 8 in the outer energy level)
Iodine has 7 valance electrons