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How are bond energies useful for the calculation of electronegativity? 

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The concept of electronegativity (EN) is mainly to discuss the nature of chemical bonding, EN of an atom is the measure of its capacity to attract the shared electron pair towards itself. Linus Pauling compiled the values of EN that are most widely used, and that are displayed for a few elements in Table - 1. These values are based on bond energy differences between atoms bonded to themselves (e.g. A-A) and to other atoms (e.g. A-B), and an arbitary value of 4 to fluorine (most electronegative element) Mulliken regarded electronegativity as the average value of ionization energy and electron affinity of an atom EN= 1/2 (IE+EA). Both IE and EA are expressed in electron volts. In the Table-2, values of IE and EA for several elements are listed Table-3 shows the values of dipole moments and bond energies for simple molecules. Based upon the electronegativity difference of bonded atoms, which of the following about the chemical bond?

Define heat of bond dissociation. How are bond enthalpies useful in the determination of heat of reaction ?

The concept of electronegativity (EN) is mainly to discuss the nature of chemical bonding, EN of an atom is the measure of its capacity to attract the shared electron pair towards itself. Linus Pauling compiled the values of EN that are most widely used, and that are displayed for a few elements in Table - 1. These values are based on bond energy differences between atoms bonded to themselves (e.g. A-A) and to other atoms (e.g. A-B), and an arbitary value of 4 to fluorine (most electronegative element) Mulliken regarded electronegativity as the average value of ionization energy and electron affinity of an atom EN= 1/2 (IE+EA). Both IE and EA are expressed in electron volts. In the Table-2, values of IE and EA for several elements are listed Table-3 shows the values of dipole moments and bond energies for simple molecules. Which of the following best describes the relationship of electronegativity, bond energy moment in a diatomic molecule ?

The highest bond energy is for

Ionic bond is formed between atoms of elements with electronegativity differences…………

Bond energies of H_2, F_2 and HF are respec tively 104.2, 36.6 and 134.6 k cal "mol"^(-1) . If the electronegativity value of hydrogen is 2.1, calculate the electro-negativity value of fluorine.

Bond energy is highest in the overlaping

Bond energy is highest in the overlaping

AAKASH SERIES-PERIODIC TABLE-QUESTIONS FOR DESCRIPTIVE ANSWERS
  1. Write the increasing order of ionisation enthalpies of Be, B, C, N and...

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  2. Which among the following should have a smaller second ionisation ener...

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  3. How are bond energies useful for the calculation of electronegativity?

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  4. Both ionisation enthalpy and electron gain enthalpy have some irregula...

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  5. With reference to the periodic table, name the following : (a) the h...

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  6. Mention different chemical criteria to call an element as metal.

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  7. How do you account for the highly electro-positive nature of alkali me...

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  8. What are anhydrides? Write exmples of acidic and basic anhydrides.

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  9. Alkali metals are good reductants and halogens are good oxidants. Why?

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  10. Comment on the following : (a) vertical relationship of elements, (b...

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  11. How many periods are needed to accommodate all elements up to Z value ...

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  12. How is polarisation power useful in explaining the diagonal relationsh...

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  13. I1 and I2 of an element are 700 and 1200 kJmol""^- If 1000 kJ "mol"^(-...

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  14. The energy required for the following process is 1.96 xx 104" kJ mol"^...

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  15. Compare the ionisation potentials of He and He^(+). Account for the di...

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  16. Bond energies of H2, F2 and HF are respec tively 104.2, 36.6 and 134.6...

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  17. Ionisation enthalpy of chlorine is "13 eV atom"^(-1) Electron gain ent...

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  18. Be forms Be^(2+) and Al^(3+) forms Al^(3+). If the radii of Be^(2+) an...

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  19. Among F((g))^(-),Cl((g))^(-0),Br((g))^(-) and I((g))^(-),  which one r...

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  20. Among Li(g), Cs(g), Cl(g) and Cl((g))^(-)  which one requires the leas...

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