Fluorine

[Anisa Morales 1L]

Why cant fluorine form a double bond?

[Daljit Takher 1B]

I think it is due to the high electronegativity of fluorine
correct me if I am wrong

[505784197]

Fluorine only needs one more bond or one more electron to be stable. Two more electrons or a double bond will make it unstable.

[Nataly Antonova 1B]

Fluorine only needs one more electron to reach a configuration of a stable octet. More bonds would simply be unfavorable.

[Vashe Sundar 3H]

Fluorine only needs one more electron to satisfy the octet rule. That means it can only form a single bond in order for it to be stable w/ a formal charge of 0.
Also since fluorine ends in the 2p orbital, it can't have an expanded octet.

[Vanessa_Ong_3F]

Fluorine is the most electronegative element and has 7 valence electrons, so it only needs one bond or one more electron to complete its octet.

[Isabelle Kludt 2B]

F has 7 valence already so it only needs one to complete the shell.

[Claire_Sabol_2G]

Because fluorine is so electronegative, it only needs one more electron to fill its valence. With every covalent bond, two atoms must share a pair of electrons. With one bond, any other atom fluorine binds to will share an electron with fluorine, with that electron being shared mostly with the fluorine. If it were to form a double bond, the atoms would need to share another electron pair. Because fluorine has already filled its valence, this is an unfavorable event for fluorine. It's like trying to feed someone that's already full!

[Lizzy Bulla 3K]

Fluorine wants to become like a noble gas. A single bond is what it wants to form, because it already has 7 electrons and only wants one more. Thus, it won't be favorable for it to form a double bond.

[Hudson2J]

Fluorine has a very high ionization energy (the highest in the periodic table), so it really doesn't like to give up electrons. Due to its high electronegativity, it prefers to keep lone pairs around it instead of giving up and electron to share with another atom.

[805758781]

Fluorine only needs one more electron to complete its octet state since it has 7 valence electrons, so it can form one covalent bond where it shares one of its electrons with another molecule who also shares on of its electrons. This results in F having 8 outershell electrons.