Which atom in each pair has the more exothermic electron affinity? (Hint: Consid

Question

1. Which atom in each pair has the more exothermic electron affinity? (Hint: Consider the stability of the electron configurations of the atom and its anion.)
   
   i) K or Ca ii) Cl or Ar a. i) K ii) Cl b. i) Ca ii) Cl c. i) K ii) Ar d. i) Ca ii) Ar e. Electron affinity is not defined for noble gases such as Ar

Which atom in each pair has the more exothermic electron affinity? (Hint: Consider the stability of the electron configurations of the atom and its anion.)

i) K or Ca ii) Cl or Ar a. i) K ii) Cl b. i) Ca ii) Cl c. i) K ii) Ar d. i) Ca ii) Ar e. Electron affinity is not defined for noble gases such as Ar Which atom in each pair has the more exothermic electron affinity? (Hint: Consider the stability of the electron configurations of the atom and its anion.)

i) K or Ca ii) Cl or Ar i) K ii) Cl i) Ca ii) Cl i) K ii) Ar i) Ca ii) Ar Electron affinity is not defined for noble gases such as Ar a. i) K ii) Cl b. i) Ca ii) Cl c. i) K ii) Ar d. i) Ca ii) Ar e. Electron affinity is not defined for noble gases such as Ar

Explanation / Answer

Answer is

A) i) K ii) Cl

exothermic electron affinity for given elements
K = 48 kJ /mol

Ca = 2 kJ/mol

Cl = 349 kJ/mol

Ar = this noble gase expected to have electron affinities close to zero

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