Question

26. Which of the following species has highest electron
affinity?
(1) Li
(2) 0
(3) O
(4) N​

Answer 1

Answer:

O

Explanation:

Electron affinity is the ability of an element to gain electrons in its gaseous state

This fact disqualifies lithium because lithium loses an electron from its outermost energy level instead of gaining it

We are therefore left with oxygen and nitrogen

Oxygen has a higher electron affinity than nitrogen because oxygen has a greater nuclear charge than nitrogen which attracts electrons to its nucleus.