Which of the following species has the highest electron affinity?
(a) F
(b) O
(c) O⁻
(d) Na⁺
Answers
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a) F(fluorine) have highest electron affinity
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Answer:
a) F
Explanation:
Electron affinity is defined as the overall change in energy in kJ/mole of a neutral atom which is in the gaseous phase, when an electron is added to the atom to form a negative ion. Thus, this means that the neutral atom has the likelihood of gaining an electron,
Further, the electron affinity is the energy change which occurs when an atom gains an electron, thereby releasing the energy in the process. Thus, if the reaction is exothermic, the change in energy will be negative, which means that the electron affinity is positive.
Halogens have the highest e− affinity. Thus the highest electron affinity is present in F which is fluoride.
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