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

Electronegativity of F is much more than hydrogen and also hybridization of oxygen atoms in of H₂O₂ and O₂F₂ 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 O-O bond length in O₂F₂ is shorter thane H₂O₂.

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.

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 ?

What is Bent’s rule of hybridization?

According to the bent's rule the more electronegative atom not only prefer to stay in that Hybride orbital which having less  % S character (more p-character) but it also decreases % S-character and increases % P-character in its attached orbital from the central atom.

On increasing % s character in hybrid orbital , the bond length  decreases while bond angle increases.

For example:C-H bond of CH₄ is longer than C-H bond of floromethan (CH₃F) because In CH₄ all the Sp3 hybrid orbitals are equal in term of  s-% character(25%) and % p-charater(75%)  so that all C-H bond in CH₄  are equal while in case of CH₃F the hybrid orbital has more p-character (more than 75%) and less s-character (less then 25%) containg fluorine atom and other hybrid orbitals have less p-character (less than75%) and more s-character (more than 25%) hence C-H bond length of CH₃F decreases.

EXCEPTIONS OF BENT’S RULE:

 (1): Bent’s rule is applicable in those molecules where central atoms are same and they are also in same Hybridization.

For example N-N bond length cannot be compared in N₂H₄ and N₂O₄ using Bent rule.

(2): Bent’s rule violets in those molecules where steric factor’s plays dominating rule.

Related Questions:

(1) What is Bent’s rule of hybridization?

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

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

(4) 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 ?

(5)  Dipole moment of PCl2F3 is non zero while dipole moment of PCl3F2 is zero why?

(6) What are the structural difference between oxides ( P4O6 and P4O10) of phosphorous?

(7) How to compare equatorial bond angle (F-S-F) and S-F bond length of SOF4 and SF4 molecules ?

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 ?

According to the bent's rule the more electronegative atom not only prefer to stay in that Hybride orbital which having less  % S character (more p-character) but it also decreases % S-character and increases % P-character in its attached orbital from the central atom depending on circumstance.

When B2H6 is allowed to react with following Lewis bases, then how may given Lewis base form adduct through symmetrical Cleavage of B2H6.

NH₃, CH₃NH₂, Pyridine , CO, T.H.F., PH₃, PF₃, (Me)₃N, (Me)₂NH.

SOLUTION:

B₂H₆ undergoes symmetrical cleavage with large size weak Lewis base like PH₃, PF₃, Pyridine , THF , (Me)₃N , CO.

Related questions:

(1) Why Ga has small size than Al exceptionally

(2) Why aqueous solution of borax reacts with two moles of acids ?

(3) What is structure of solid Ortho Boric acid ?

(4)What is the structure of trimetaboric acid and trimetaborate ion?  

(5) Why Borazine is more reactive than benzene towards Electrophic Aromatic substitution reactions ?

(6) Why Borazine (B₃N₃H₆) is also known as inorganic benzene ?.

(7) Why B-F bond length in BF₃ is shorter (130 pm) than B-F bond Iength in BF₄- (143 pm)?. Explain.

(8) Why B-F do not exist as dimer?. Explain.

(9) Although anhydrous aluminium chloride is covalent but its aqueous solution is ionic in nature. Why?

(10) Why Boric acid become strong acid in the presence of cis 1,2-diol or 1,3-diol ?

(11) Three-center two-electron bond (3C-2e Bond):Structure of AlCl3:

(12) What is the molecular formula of Borax ?

(13) What is the difference between the structure of AlCl₃ and diborane?

Give the examples of covalent species which have different hybridization in gaseous state as well as in liquid phase?