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Which element processes highest electron...

Which element processes highest electron affinity?

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The correct Answer is:
Chlorine
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Name the element with highest electron affinity and give its value.

The amount of energy released when an electron is added to an isolated gaseous atom to produce a monovalent anion is called electron affinity or first electron affinity or electron gain enthalpy. The first electron is given a negative sign as the addition of an electron to a neutral atom is an exoergic process. The addition of electron to A^(-1) requires energy to overcome the force of repulsion. Thus, the second electron affinity is an endoergic process. The magnitude of electron affinity depends on a number of factors such as (i) atomic size (ii) effective nuclear charge (iii) screening effect (iv) half and fully filled orbitals and (v) shape of orbital. In general, electron affinity increases as the atomic radii decrease in a period. However, there are exceptions when the atoms have stable configurations. In a group, electron affinity decreases as the size increases. However, the members of 3rd period have somewhat higher values than the members in the 2nd period of the same subgroups. Which of the following species has the highest electron affinity?

AAKASH SERIES-PERIODIC PROPERTIES-LEVEL-II (TYPE -II) (PRACTICE SHEET -2 (SUBJECTIVE/ ANALYTICAL TYPE QUESTIONS ))
  1. Na^+ has higher value of ionization energy than Ne. So ionisation ener...

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  2. Which in each pair of elements has a more negative electron gain entha...

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  3. Electron affinity of chlorine is more than that of fluorine explain.

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  4. Which has bigger electron affinity in each pair? (a)F or Cl^- ,(b)O ...

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  5. Among the elements b, Al, C and Si (a)Which has the highest first io...

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  6. Consider the elements N, P, O and S and arrange them in order of Incre...

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  7. Consider the elements N, P, O and S and arrange them in order of : ...

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  8. Consider the elements N, P, O and S and arrange them in order of Incre...

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  9. Arrange in the given order: Increasing EA : O,S and Se

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  10. Arrange in the given order: Increasing IE1:Na , K and Rb

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  11. Arrange in the given order: Increasing radius : I,I^+ and I^-

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  12. Arrange in the given order: Increasing electronegativity :F , Cl , B...

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  13. Arrange in the given order: Increasing electronegativity :F , Cl , B...

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  14. Which of the following order is correct for the size of Fe^(3+) , Fe a...

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  15. Name the element with highest ionization enthalpy.

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  16. Name the family with highest value of ionization enthalpy.

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  17. Which element processes highest electron affinity?

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  18. Name unknown group of elements at the time of Mendeleef

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  19. Name any two typical elements.

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