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Which of the following pairs of elements...

Which of the following pairs of elements would have a more negative electron gain enthalpy?
a. `O` or `F`, b.`F` or `Cl`

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`{:((i)F, (ii) Cl):}`
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Which of the following pairs of elements would have more negative electron gain enthalpy.

S has more negative electron gain enthalpy than O why ?

Answer the following question (Based on EA, Delta_(eg)H^(ɵ) and IE ). (a) IE_(1) of Li is 5.4 eV "atom"^(-1) and the EA of Cl is 3.6 eV "atom"^(-1) . Calculate Delta_( r)H^(ɵ) in "kcal mol"^(-1) and kJ mol^(-1) for the reaction Li_((g))+Cl_((g)) rarr Li_((g))^(o+)+Cl_((g))^(ɵ) formed at such a low pressure that resulting ions do not combine with each other. (b) The IE of atoms X and Y are 400 and 300 kcal mol^(-1) respectively. EA's of these atoms are 80.0 and 85.0 K cal mol^(-1) . Explain as which of the atoms has higher EN . ( c) Explain why EA of S is -200 kJ mol^(-1) but the second EA is +649 kJ mol^(-1) ? (d) Which of the following pairs of elements would have more negative electron gain enthalpy (Delta_("eg")H^(ɵ)) ? (i) F or Cl , (ii) O or F (e) What would be the second electron gain enthalpy (Delta_(eg)H_(2)^(ɵ)) of oxygen as positive, more negative or less negative than first (Delta_(eg)H_(1)^(ɵ)) ? Explain. (f) Which has less negative Delta_(eg)H^(ɵ) oxygen or sulphur?

Which of the following atom should have the highest negative first electron gain enthalpy ?

Which among the following elements will have a positive electron gain enthalpy ? B, C, N, O.

Which of the following pairs would have a higher negative electron gain enthalpy ? {:((i)N or O, (ii) For Cl),((iii)Br or I, (iv) B or Al):}

Which of the following elements has the most negative electron gain enthalpy?

MODERN PUBLICATION-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES -NCERT FILE (NCERT TEXTBOOK EXERCISE)
  1. What are the various factors due to which the ionisation enthalpy of t...

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  2. The first ionization enthalpy values (in kJ mol^(-1)) of group 13 elem...

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  3. Which of the following pairs of elements would have a more negative el...

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  4. Would you expect the second electron gain enthalpy of O as positive, m...

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  5. What is the basic difference between the terms electron gain enthalpy ...

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  6. How would you react to the statement that the electronegativity of N o...

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  7. Describe the theory associated with the radius of an atom as it a. g...

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  8. Would you expect the first ionisation enthalpies for two isotopes of t...

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  9. What are the major differences between metals and non-metals?

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  10. Use the periodic table to answer the following questions. a. Identif...

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  11. The increasing order of reactivity among group 1 elements is LiltNaltK...

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  12. Write the general outer electronic configuration of s-,p-,d- and f-blo...

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  13. Assign the position of the element having outer electronic configurati...

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  14. Identify the position of the elements having outer electronic config...

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  15. Predict the formula of the stable binary compounds that would be forme...

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  16. In the modern periodic table, the period indicates the value of

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  17. Which of the following statements related to the modern periodic table...

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  18. Anything that influences the valence electrons will affect the chemist...

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  19. The size of isoelectronic species F^(ɵ), Ne, and Na^(o+) is affected b...

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  20. Which one of the following statement is incorrect

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