Single Choice

In a bonded molecule, the order of repulsion between the bonded and non-bonded electrons is:

Alone pair - lone pair > bond pair - bond pair > lone pair - bond pair
Bbond pair-bond pair > lone pair - lone pair > lone pair - bond pair
Clone pair - lone pair > lone pair - bond pair > bond pair - bond pair
Correct Answer
Dbond pair- bond pair > lone pair - bond pair > lone pair - lone pair.

Solution

Lone pair-lone pair $$lp-lp$$ repulsions are considered stronger than lone pair-bonding pair $$lp-bp$$ repulsions, which in turn are considered stronger than bonding pair-bonding pair $$bp-bp$$ repulsions,
This is because the lone pair of electrons are attracted towards single nuclei only whereas bond pair electrons are attracted towards two nuclei. Thus the strength of the lone pair-lone pair repulsion is supposed to be more than bond pair-bond pair or bond pair-lone pair repulsion.

SIMILAR QUESTIONS

Chemical Bonding

Which of the following statement is true?

Chemical Bonding

Which has higher bond energy and stronger bond?

Chemical Bonding

The average $$S-F$$ bond energy in $$SF_6$$ if the $$\Delta H^o_f$$ values are $$-1100,\ +275$$ and $$+80$$ kJ/mol respectively for $$SF_6$$(g), $$S$$(g) and $$F$$(g) is:

Chemical Bonding

Strongest $$C-C$$ bond is present in:

Chemical Bonding

Arrange the following bonds according to their average bond energies in descending order : $$C - Cl$$, $$C-Br$$, $$C-F$$, $$C-I$$

Chemical Bonding

Arrange the following in order of increasing bond dissociation enthalpy. H−H, D−D and F−F

Chemical Bonding

Which of the following will be the strongest bond?

Chemical Bonding

Match the bond enthalpies given in column II with the molecules given in column I and mark the appropriate choice. Column I Column II (A) Hydrogen $$(H_2)$$ (i) 498.0 kJ $$mol^{-1}$$ (B) Oxygen $$(O_2)$$ (ii) 946.0 KJ $$mol^{-1}$$ (C) Nitrogen $$(N_2)$$ (iii) 435.8 kJ $$mol^{-1}$$

Chemical Bonding

Which of the following species absorb maximum energy in its HOMO-LUMO electronic transition?

Chemical Bonding

Which of the following bonds has the highest bond energy?

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