General Knowledge - Chemistry - Discussion

F is the most electonegative element and its electronegativity 3.98.

Most electronegative element is F. No, it is not the element with highest electron with highest electron affinity because of its very small size.

F because, electronegativity increase across the period and decrease down the group. But F and O are of the same period with atomic numbers 8 and 9 respectively and since F has a higher atomic no than O, hence F is highly electronegative than the other elements.

Atomic no of florine is 9 its configuration is 2, 7 outermost shell contain 7 electrons it is easy to gain one 'e' to complete its octect. That's why it is more electronegative element.

While going to the right side the size of the atom is decreasing, hence the size of the oxygen is higher than fluorine. Also to obey the octet rule fluorine needs one more electron. All these makes fluorine more electronegative than oxygen.

Flourine is d most electronegative because its outer most shell has 7electrons which therefore makes it react easily with other elements in other to achieve an octet structure.

Fluorine consists of negative oxidation states than other halogen elements. So that it considered as the most electronegative element.

Because it is a halogen & halogens are more electronegative than other elements.

Because of presenting in the halogen group it having the higher electron negativity. Fluorine is in small size so it wants only one electron for this it is the strong oxidizing agent.

Electronegativity is defined as the phenomenon where the ability of an element to pull shared pair of electrons towards itself.

As we move across the group in the periodic table, electronegativity increases and as we move down the group it decreases. Flourine is the last element placed before noble gases in the periodic table. Its electron config is 1s22s22p5. Owing to its small atomic size (than oxygen) , flourine atom has a higher tendency to pull shared pair of electrons towards itself.