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Increasing order of electron affinity is

 

Option: 1

\quad N<O<C l<Al


Option: 2

\quad O<N<A l<C l


Option: 3

\quad A l<N<O<C l


Option: 4

C l<N<O<A l


Answers (1)

best_answer

As we have learnt,

Electron affinity generally increases on moving from left to right in a period and decreases from top to bottom down a group. However, the elements of 3rd period have a greater electron affinity than their 2nd period counterparts because of small size of 2nd period elements. This small size causes inter electronic repulsions, leading to a decrease in the electron affinity.

Thus, the correct order of Electron affinity is Al<N<O<Cl

Posted by

Suraj Bhandari

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