Why N-N bond length of H2N-NH2 is greater than N-N bond length of F2N-NF2 molecules?

Electronegativity of F is much more than hydrogen and also hybridization of nitrogen atoms in of H₂N-NH₂ and F₂N-NF₂ both have (sp3) same . According bent’s rule those hybrid orbitals containing flourine atom have less % s-characterand more p-character while other orbitals have more % s-character and less % s-character hence N-N bond length in F₂N-NF₂ is shorter than H₂N-NH₂

Related Questions:

What is Bent’s rule of hybridization?

Which of the following compound have longest (S=O)bond length , O=SF2, O=SCl2, O=SBr2.

Why Bond length of O-O is greater in H2O2 than O2F2?

How to arrange increasing (C-H) bond length in increasing order and H-C-F bond angle in the given compounds, CH4, CH3F, CH2F2 and CHF3 ?