How many electron does a Florine ion (F-) have?
A. 19
B. 20
C. 21
D. 22

Florine ion (F-) has 10 electrons

Fluorine (symbol F) is one of the halogen elements in the form of gas, located in period 2, group 17 and including the p block.

Has atomic number 9, with the electron configuration:

1s² 2s² 2p5⁵

Fluorine to obtain stability according to the noble gas element (neon) will bind one electron to form a negative ion (anion) F-, so that the electron configuration becomes

1s² 2s² 2p⁶, so there are 10 electrons (is not in the answer option)

answer: e.   sour taste

explanation: acids are those substances which dissociates in water to give ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. acids are sour in taste. example: hcl

bases are those substances which dissociates in water to give ions or accepts ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. bases are bitter in taste. bases are slippery in nature.