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Electron gain enthalpy values

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The calculated electron gain enthaly values for alkaline earth metals and noble gases are positive . How can you explain this ?

Electron gain enthalpy of fluorine is less than that of chlorine - explain.

Electron affinity values in (KJ mol^(-)) F(-328), Cl-(349), Br(-325), I(-295) i) Electron gain enthalpy decreases as we go down in group. ii) Electron gain enthalpy decreases as we go left to right in period.

(A): Electron gain enthalpy of noble gases is very less (R): Atoms of noble gases have completely filled orbitals

(A) Electron gain enthalpy of fluorine is less than chlorine but fluorine is a strong oxidising agent than chlorine (R ) Fluorine has low enthalpy of dissociation and fluoride has high hydration enthalpy

Electron gain enthalpy is known as

What do you mean by the term electron gain enthalpy? How does electron gain enthalpy change along a period and in a group?

Both ionisation enthalpy and electron gain enthalpy have some irregular trends in the third period. Explain.

Both ionisation enthalpy and electron gain enthalpy have some irregular trends in the third period. Explain.

VGS PUBLICATION-BRILLIANT-CLASSIFICATION OF ELEMENTS -THE PERIODIC TABLE -CREATIVE QUESTIONS FOR NEW MODEL EXAMINATION (SECTION -I)
  1. While going left to right in a period in the periodic table , ...

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  2. How does ionisation energy change when we go down in a group ...

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  3. Electron gain enthalpy values

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  4. what does negative sigh indicate ?

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  5. Which of the above element shows more electron affinity value ?

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  6. What is the property of an element , in which atom can attract...

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  7. Write the formula of electrongativity proposed by miliken ?

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  8. Who assigned electronegativity values for elements on the basis...

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  9. Match the electronegativity values .

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  10. which is the most electronegative element ?

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  11. which stable element shows least electronegativity ?

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  12. In compounds , they generally show a tendency to remain as posi...

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  13. give example to good electropositive elements .

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  14. A ) Non -metals are generally more electronegatinve R ) Electro...

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  15. 1) 3^(rd ) period : Na , Mg ,Al,Si,P ,S,cl 2) Metallic charac...

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  16. Identify non- metals .

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  17. Identify metalloids .

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  18. Write any two properties which are decreased from top to bott...

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  19. Write any two properties which are decreasesed from left to r...

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  20. A: 1S^(2) 2S^(2) B: 1s^(2) 2s^(2) 2p^(6) 3^(2) To which ...

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