Answer:
is a nonmetal
fills its shell by gaining one electron
becomes a negatively charged ion
Step-by-step explanation:
Fluorine is in group 7 of the periodic table and in period 2. Elements found in group 7 are mostly non metals. This non metals mostly gain electron during bonding with other atom of elements.
Fluorine fills it outer shell by gaining a single electron. The valency electron of Fluorine is 7 . It can easily attract 1 electron to it self to attain the octet rule. This is why most non metal in group 7 are very reactive .
Fluorine easily become an anion as they gain single electron. The charge become negatively charged. It gains single charge and possess a charge of -1.
The electronic configuration is 2 7. The atomic number of Florine is 9.