Which of following group has maximum 1st electron affinity values in same period :
Correct answer: C. VII A
- A. V A
- B. VI A
- C. VII A
- D. VIII A
Explanation
Electron affinity is the amount of energy released when an electron is added to the valence shell of an isolated gaseous atom and its value increases from left to right in a period upto group VII A. Group VII A elements need only one electron to complete their octet making them highly reactive and eager to gain that one electron and hence have the highest 1st electron affinity values.
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