Hydrogen electronegativity

[Kim Tran 1J]

Why is the electronegativity of fluorine higher than hydrogen? but hydrogen has a high electronegativity right?

[LaurenJuul_1B]

The positive charge on fluorine is +9, but on hydrogen it is +1, so the magnitude positive charge (which is responsible for high electronegativity because it contributes to the pull on the electrons by the nucleus) is very high on fluorine.

[timschaeffer Dis 1J]

Electronegativity increases as you go across a period and as you go down a group. Based on the graph, it looks like electronegativity is more heavily effected by going across a group. This might explain why flourine (on the far right of the table) is more electronegative than hydrogen (on the far left), even though flourine is in the period below hydrogen.

[LaurenJuul_1B]

and to answer the second part of your question, yes hydrogen has relatively high electronegativity due to only having one electron in its 1s shell. Atoms are more stable with a full shell, so hydrogen has a high electronegativity, (or in other words a high want to attract an electron) since it only needs one more electron to fill its 1s shell.